PBDB Taxon

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Cephalopoda

Taxonomy

Cephalopoda was named by Cuvier (1797). It is extant.

It was assigned to Mollusca by Stanton (1895), Martin (1904), Smith (1927), Miagkova (1967), Squires (1984), Wells and Houston (2001), Sepkoski (2002), Giribet et al. (2006) and Fuchs et al. (2013).

Synonyms

Irianoceras was named by Kobayashi and Burton (1971) [Sepkoski's age data: O Aren O Llde Sepkoski's reference number: 298]. Its type is Irianoceras antiquum.

It was considered a nomen dubium by Dzik (1984).

It was assigned to Plectronoceratidae by Crick (1981); and to Ellesmerocerida by Sepkoski (2002).
Ohioceratidae was named by Shimizu and Obata (1936). It is not extant.

It was considered an invalid subgroup of Cephalopoda by Flower (1962).

Synonymy list

Year	Name and author
1797	Cephalopoda Cuvier
1895	Cephalopoda Stanton p. 72
1904	Cephalopoda Martin p. 130
1927	Cephalopoda Smith
1936	Ohioceratidae Shimizu and Obata
1967	Cephalopoda Miagkova
1971	Irianoceras Kobayashi and Burton
1981	Irianoceras Crick p. 227
1984	Cephalopoda Squires p. 54
2001	Cephalopoda Wells and Houston p. 129
2002	Cephalopoda Sepkoski
2002	Irianoceras Sepkoski
2006	Cephalopoda Giribet et al. p. 7724
2013	Cephalopoda Fuchs et al. p. 246

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia

Rank	Name	Author
superphylum	Lophotrochozoa
phylum	Mollusca
class	Cephalopoda	Cuvier 1797
class	Cephalopoda	Cuvier 1797

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Cl. Cephalopoda Cuvier 1797

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G. †Akidocheilus Till 1907

Subg. †Akidocheilus (Akidocheilus) Till 1907

Subg. †Akidocheilus (Planecapula) Shimanskiy 1947

Subcl. †Ammonoidea Zittel 1884 [ammonite]

Superfm. †Aequiloboidea Bilotta 2010

Fm. †Aequilobidae Bilotta 2010

G. †Aequilobus Bilotta 2010

†Aequilobus cuneostriatus Bilotta 2010

G. †Dudresnayiceras Rakus 1994

†Dudresnayiceras suessi Hauer 1854

†Dudresnayiceras suessiforme Rakus 1994

Fm. †Sinuiceratidae Venturi et al. 2005

G. †Sinuiceras Venturi and Ferri 2001

†Sinuiceras planulatum Venturi and Ferri 2001

Invalid names: Sinuiceras laevispira Venturi and Ferri 2001 [synonym]

G. †Sphenoacanthites Venturi et al. 2007

†Sphenoacanthites costotuberculatum Rakús and Guex 2002

G. †Xenoloboceras Bilotta 2010

†Xenoloboceras micromorphum Bilotta 2010

Or. †Agoniatitida Ruzhencev 1957

Subor. †Agoniatitina Ruzhencev 1957

Superfm. †Agoniatitaceae Holzapfel 1899

Fm. †Agoniatitidae Holzapfel 1899

Fm. †Atlantoceratidae Korn 2001

Fm. †Pinacitidae Hyatt 1900

Fm. †Tamaritidae Korn 2001

Superfm. †Mimagoniatitaceae Miller 1938

Fm. †Auguritidae Bogoslovsky 1961

Fm. †Latanarcestidae Korn 2001

Fm. †Mimagoniatitidae Miller 1938

Superfm. †Mimosphinctaceae Erben 1953

Fm. †Mimoceratidae Steinmann 1890

Fm. †Mimosphinctidae Erben 1953

Fm. †Teicherticeratidae Bogoslovsky 1969

Subor. †Anarcestina Miller and Furnish 1954

Superfm. †Anarcestaceae Steinmann 1890

Fm. †Anarcestidae Steinmann 1890

Fm. †Cabrieroceratidae Korn 2002

Fm. †Sobolewiidae House 1989

Invalid names: Holzapfeloceratidae Becker and House 2000 [synonym]

Fm. †Werneroceratidae Erben 1964

Invalid names: Prolobitaceae Wedekind 1913 [empty]

Subor. †Gephuroceratina Ruzhencev 1957

Superfm. †Belocerataceae Hyatt 1884

Fm. †Beloceratidae Hyatt 1884

Fm. †Nordiceratidae Korn 2002

Superfm. †Gephurocerataceae Frech 1897

Fm. †Acanthoclymeniidae Schindewolf 1955

Invalid names: Ponticeratidae Korn 2002 [synonym]

Fm. †Devonopronoritidae Bogoslovsky 1958

Fm. †Gephuroceratidae Frech 1897

Fm. †Koenenitidae Becker and House 1993

Fm. †Taouzitidae Korn 2001

Subor. †Pharciceratina Korn 1998

Superfm. †Pharciceratoidea Hyatt 1900

Fm. †Maenioceratidae Bogoslovsky 1958

Fm. †Petteroceratidae Becker and House 1993

Fm. †Pharciceratidae Hyatt 1900

Fm. †Triainoceratidae Hyatt 1884

Invalid names: Sandbergeroceratidae Miller 1938 [synonym]

Invalid names: Triainocerataceae Hyatt 1884 [empty]

Invalid names: Anarcestida Miller and Furnish 1954 [synonym]

Or. †Ammonitida Hyatt 1889

Subor. †Ammonitina Hyatt 1889

Superfm. †Acanthoceratoidea de Grossouvre 1894

Fm. †Acanthoceratidae Grossouvre 1894

Invalid names: Buchiceratidae Hyatt 1903 [synonym], Metoicoceratidae Hyatt 1903 [synonym]

Fm. †Brancoceratidae Spath 1934

Fm. †Cleoniceratidae Whitehouse 1926

Invalid names: Lemuroceratinae Owen 1988 [synonym]

Fm. †Coilopoceratidae Hyatt 1903

Fm. †Collignoniceratidae Wright and Wright 1951

Invalid names: Prionocyclidae Breistroffer 1947 [replaced], Prionotropidae Zittel 1865 [replaced]

Fm. †Flickiidae Adkins 1928

Fm. †Forbesiceratidae Wright 1952

Fm. †Leymeriellidae Breistroffer 1951

Fm. †Lyelliceratidae Spath 1921

Fm. †Mojsisovicsiidae Hyatt 1903

Fm. †Prolyelliceratidae Latil et al. 2009

Fm. †Pseudotissotidae Hyatt 1903

Fm. †Pseudotissotiidae Hyatt 1903

Fm. †Sphenodiscidae Hyatt 1900

Invalid names: Libycoceratidae Zaborski 1982 [synonym]

Fm. †Tissotiidae Hyatt 1900

Fm. †Vascoceratidae Douvillé 1912

Invalid names: Hystatoceratidae Hyatt 1900 [empty], Peroniceratidae Hyatt 1900 [empty]

Superfm. †Aspidoceratoidea Zittel 1895

Fm. †Aspidoceratidae Zittel 1895

Superfm. †Deshayesitoidea Stoyanow 1949

Fm. †Deshayesitidae Stoyanow 1949

Fm. †Parahoplitidae Spath 1922

Superfm. †Desmoceratoidea Zittel 1895

Fm. †Beudanticeratidae Breistroffer 1953

Fm. †Desmoceratidae Zittel 1895

Fm. †Kossmaticeratidae Spath 1922

Fm. †Muniericeratidae Wright 1952

Invalid names: Pseudoschloenbachiidae van Hoepen 1968 [synonym]

Fm. †Pachydiscidae Spath 1922

Fm. †Silesitidae Hyatt 1900

Invalid names: Puzosiidae Spath 1922 [empty]

Superfm. †Engonoceratoidea Hyatt 1903

Fm. †Knemiceratidae Hyatt 1903

Superfm. †Eoderoceratoidea Spath 1929

Fm. †Coeloceratidae Haug 1910

Invalid names: Pimelitidae Wiedenmayer 1977 [synonym]

Fm. †Dactylioceratidae Hyatt 1867

Fm. †Eoderoceratidae Spath 1929

Invalid names: Deroceratidae Hyatt 1867 [synonym], Dubariceratidae Dommergues and Meister 1999 [synonym], Hemimicroceratidae Spath 1929 [synonym], Microceratidae Spath 1926 [synonym], Xipheroceratidae Spath 1925 [synonym]

Fm. †Liparoceratidae Hyatt 1867

Fm. †Phricodoceratidae Spath 1938

Invalid names: Epideroceratidae Dommergues and Meister 1999 [synonym], Villaniinae Arkell 1957 [synonym]

Fm. †Polymorphitidae Haug 1887

Superfm. †Hammatoceratoidea Schindewolf 1964

Fm. †Hammatoceratidae Buckman 1887

Superfm. †Hildoceratoidea Hyatt 1867

G. †Diplesioceras

Fm. †Graphoceratidae Buckman 1905

Fm. †Hildoceratidae Hyatt 1867

Fm. †Phymatoceratidae Hyatt 1867

Fm. †Sonniniidae Buckman 1892

Invalid names: Harpocerataceae Wedekind 1917 [synonym]

Superfm. †Hoplitoidea Douvillé 1890

Fm. †Engonoceratidae Hyatt 1900

Fm. †Hoplitidae Douvillé 1890

Fm. †Placenticeratidae Hyatt 1900

Invalid names: Hypengonoceratidae Chiplonkar and Ghare 1976 [synonym]

Fm. †Schloenbachiidae Parona and Bonarelli 1897

Invalid names: Forbesiceridae Wright 1952 [empty]

Superfm. †Lytoceratoidea Neumayr 1875

Fm. †Lytoceratidae Neumayr 1875

Invalid names: Ammonoceratitidae Brunnschweiler 1966 [synonym], Holcolytoceratidae Venturi et al. 2005 [synonym]

Invalid names: Cicatritidae Spath 1937 [empty], Trachyphyllitidae Wiedmann 1966 [empty]

Superfm. †Perisphinctaceae Steinman 1890

Fm. †Holcodiscidae Spath 1924

G. †Isterites Barthel 1975

Fm. †Oosterellidae Kilian 1911

Fm. †Platylenticeratidae Casey 1973

Fm. †Polyptychitidae Wedekind 1918

Superfm. †Perisphinctoidea Steinman 1890

Fm. †Ataxioceratidae Buckman 1921

Fm. †Aulacostephanidae Spath 1924

Fm. †Crioceratitidae Wright 1952

Invalid names: Pedioceratidae Hyatt 1900 [synonym]

Fm. †Himalayitidae Spath 1925

Fm. †Kosmoceratidae Haug 1887

Fm. †Morphoceratidae Hyatt 1900

Fm. †Neocomitidae Salfeld 1921

Fm. †Pachyceratidae Buckman 1918

Fm. †Parkinsoniidae Buckman 1920

Fm. †Perisphinctidae Steinmann 1890

Fm. †Reineckeiidae Hyatt 1900

G. †Sarmatisphinctes Kutek and Zeiss 1997

Fm. †Simoceratidae Spath 1924

Fm. †Virgatitidae Spath 1924

Invalid names: Reinceckeiidae Hyatt 1900 [empty]

Superfm. †Psiloceratoidea Hyatt 1867

Fm. †Arietitidae Hyatt 1875

Fm. †Asteroceratidae Spath 1946

Fm. †Cymbitidae Buckman 1919

Fm. †Echioceratidae Buckman 1913

Fm. †Oxynoticeratidae Hyatt 1875

Fm. †Psiloceratidae Hyatt 1867

Invalid names: Caloceratidae Buckman 1906 [synonym]

Fm. †Schlotheimiidae Spath 1923

Invalid names: Waehneroceratinae Rakus 1975 [synonym]

Invalid names: Arietitacea Hyatt 1875 [synonym], Phyllytoceratidae Wiedmann 1970 [empty]

Superfm. †Pulchelliaceae Douvillé 1890

Fm. †Pulchelliidae Hyatt 1903

Superfm. †Spiroceratoidea Hyatt 1900

Fm. †Spiroceratidae

Superfm. †Stephanoceratoidea Newmayr 1875

Fm. †Cardioceratidae Siemiradzki 1891

Invalid names: Cadoceratidae Hyatt 1900 [synonym]

Fm. †Macrocephalitidae

Fm. †Oecoptychiidae Arkell 1957

Fm. †Otoitidae Mascke 1907

Fm. †Sphaeroceratidae Buckman 1920

Fm. †Stephanoceratidae Neumayr 1875

Fm. †Tulitidae Buckman 1921

Invalid names: Lytoceratina Hyatt 1899 [synonym], Oppeliaceae Buckman 1924 [empty], Sphaeroceratoidea Neumayr 1875 [empty]

Subor. †Ancyloceratina Wiedmann 1966

Superfm. †Acanthohoplitoidea Stoyanow 1949

Fm. †Acanthohoplitidae Stoyanow 1949

Superfm. †Ancyloceratoidea Gill 1871

Fm. †Acrioceratidae Vermeulen 2004

Fm. †Ancyloceratidae Gill 1871

Fm. †Hemihoplitidae Spath 1924

Fm. †Heteroceratidae Spath 1922

Fm. †Himantoceratidae Dimitrova 1970

Fm. †Labeceratidae Spath 1925

Invalid names: Aleteceratidae Whitehouse 1926 [synonym]

Fm. †Leptoceratoididae Thieuloy 1966

G. †Paraspiticeras

Fm. †Ptychoceratidae Meek 1876

Superfm. †Douvilleiceratoidea Parona and Bonarelli 1897

Fm. †Astiericeratidae Breistroffer 1953

Fm. †Douvilleiceratidae Parona and Bonarelli 1897

Fm. †Trochleiceratidae Breistroffer 1951

Superfm. †Protancyloceratoidea Breistroffer 1947

Fm. †Aegocrioceratidae Vermeulen 2006

Fm. †Protancyloceratidae Breistroffer 1947

Superfm. †Scaphitoidea Gill 1871

Fm. †Scaphitidae Gill 1871

Superfm. †Turrilitoidea Gill 1871

Fm. †Anisoceratidae Hyatt 1900

Invalid names: Algeritidae Spath 1925 [synonym], Phlycticrioceratidae Spath 1926 [synonym]

Fm. †Baculitidae Gill 1871

Fm. †Diplomoceratidae Spath 1926

Fm. †Hamitidae Gill 1871

Fm. †Nostoceratidae Hyatt 1894

Invalid names: Jouaniceratidae Wright 1952 [synonym]

G. †Plesiohamites

Fm. †Turrilitidae Gill 1871

Invalid names: Diplomocerataceae Spath 1926 [synonym]

Invalid names: Parahoplitoidea Spath 1922 [empty]

Subor. †Haploceratina

Superfm. †Haploceratoidea Zittel 1884

Fm. †Binneyitidae Reeside 1927

Fm. †Haploceratidae Zittel 1884

Fm. †Hebetoxyitidae Buckman 1924

Fm. †Lissoceratidae Douville 1885

Fm. †Oppeliidae Bonarelli 1894

Fm. †Strigoceratidae Buckman 1914

G. †Tropitoides Spath 1925

Subor. †Olcostephanina Haug 1910

Superfm. †Olcostephanoidea Haug 1910

Fm. †Olcostephanidae Haug 1910

Subor. †Protancyloceratina Vermeulen 2005

Superfm. †Bochianitoidea Spath 1922

Fm. †Bochianitidae Spath 1922

Invalid names: Ammonites Bruguière 1789 [nomen vanum], Ancylocerina [empty], Cardiocerina [empty], Perisphinctina Steinmann 1890 [empty], Psilocerina [empty], Stephanocerina [empty]

G. †Aptychus von Meyer 1861

†Aptychus knoxvillensis Stanton 1895

Fm. †Aulicostephanidae Spath 1924

G. †Sutnaria Reinecke 1818

†Sutnaria apora Oppel 1863

Or. †Ceratitida Hyatt 1884 [ceratite]

G. †Anfaceras

Superfm. †Arcestoidea Mojsisovics 1875

Fm. †Arcestidae Mojsisovics 1875

G. †Anisarcestes Kittl 1908

G. †Arcestes Suess 1865

G. †Galeites Rollier 1909

G. †Gonarcestes Diener 1919

G. †Proarcestes Mojsisovic 1893

G. †Rhaetites Hyatt 1900

G. †Stenarcestes von Mojsisovics 1895

Invalid names: Joannitinae von Mojsisovics 1882 [empty], Lobitinae von Mojsisovics 1882 [empty]

Fm. †Cladiscitidae Zittel 1884

Subfm. †Cladiscitinae Zittel 1884

Subfm. †Procladiscitinae Gamsjäger 1982

Fm. †Joannitidae von Mojsisovics 1882

G. †Joannites Mojsisovics 1879

G. †Romanites Kittl 1908

Fm. †Proarcestidae Wiedmann 1973

G. †Nevadisculites Bucher 1988

Fm. †Sphingitidae Arthaber 1911

G. †Sphingites Mojsisovics 1879

Fm. †Arctohungaritidae Vavilov 1992

G. †Arctohungarites Diener 1916

†Arctohungarites burgaliensis Bychkov et al. 1976

†Arctohungarites evolutus Vavilov 1978

†Arctohungarites involutus Kiparisova 1937

†Arctohungarites kharaulakhensis Popov 1961

†Arctohungarites laevigatus Popow 1961

†Arctohungarites liardensis Tozer 1994

†Arctohungarites trapezoidalis Popov 1961

†Arctohungarites tregoi Bucher 1992

†Arctohungarites triformis Mojsisovics 1886

†Arctohungarites ventroplana Popov 1961

G. †Boreiohungarites Dagys 2001

G. †Epiczekanowskites Popov 1961

G. †Kendelena Dagys 2001

G. †Orientohungarites Dagys 2001

G. †Timites Dagys 2001

G. †Tuaroceras Dagys 2001

G. †Bajarunia Dagys 1983

†Bajarunia alexeevae Popov 1961

†Bajarunia confusionensis Guex et al. 2005

†Bajarunia eiekitensis Popov 1962

†Bajarunia euomphala Keyserling 1845

†Bajarunia magna Zakharov and Smyshlyaeva 2016

†Bajarunia pilata Hyatt and Smith 1905

Invalid names: Meekoceras curticostatum Smith 1932 [synonym], Meekoceras micromphalus Smith 1932 [synonym], Meekoceras sanctorum Smith 1932 [synonym]

G. †Caribouceras Brayard et al. 2019

†Caribouceras slugense Brayard et al. 2019

G. †Carteria Guex et al. 2005

†Carteria hotspringensis Guex et al. 2005

Subor. †Ceratitina Hyatt 1884

Fm. †Acrochordiceratidae Arthaber 1911

G. †Acrochordiceras Hyatt 1877

Invalid names: Epacrochordiceras Spath 1934 [synonym], Haydenites Diener 1907 [synonym], Silesiacrochordiceras Diener 1916 [synonym]

G. †Bradyia Bucher 2002

G. †Columboceras Bucher 2002

G. †Globacrochordiceras Monnet et al. 2013

G. †Paracrochordiceras Spath 1934

Invalid names: Caucasochordiceras Shevyrev 1995 [synonym], Eoacrochordiceras Wang 1978 [synonym], Preflorianitoides Wang 1978 [synonym], Proacrochordiceras Korschinskaya 1983 [synonym]

G. †Pseudacrochordiceras Tozer 1994

Fm. †Celtitidae

G. †Indoceltites Diener 1919

G. †Kasimlarceltites Lukeneder and Lukeneder 2014

Fm. †Meekoceratidae Waagen 1895

G. †Acutomeekoceras Jenks et al. 2010

G. †Ambitoides Shigeta and Zakharov 2009

G. †Juvenites Smith 1927

G. †Karangatites Popov 1968

Invalid names: Arctoceratinae Hyatt 1900 [empty], Flemingitinae Hyatt 1900 [empty], Kymatitinae Waagen 1895 [empty], Meekoceratinae Waagen 1895 [empty]

Fm. †Paranannitidae Spath 1930

G. †Arianites Arthaber 1911

G. †Chioceras Renz and Renz 1948

G. †Chiotites Renz and Renz 1948

G. †Epiceltites Arthaber 1911

G. †Isculitioides Spath 1930

G. †Metinyoites Spath 1930

G. †Monacanthinites Tozer 1965

G. †Omanites Brühwiler and Bucher 2012

G. †Owenites Hyatt and Smith 1905

Invalid names: Parowenites Spath 1934 [synonym], Pseudowenites Chao 1959 [synonym]

G. †Prosphingitoides Shevyrev 1995

G. †Protropites Arthaber 1911

G. †Pseudoprosphingites Shevyrev 1995

G. †Steckites Brühwiler et al. 2012

G. †Subowenites Popov 1962

G. †Zenoites Renz and Renz 1948

Fm. †Ussuriidae Spath 1930

G. †Parussuria Spath 1934

G. †Ussuria Diener 1895

Invalid names: Clydonitoidea von Mojsisovics 1879 [empty]

Superfm. †Ceratitoidea Mojsisovics 1879

Fm. †Badiotitidae Hyatt 1900

G. †Badiotites Mojsisovics 1879

G. †Orthoceltites Spath 1951

Fm. †Balatonitidae Spath 1951

G. †Augustaceras Bucher 1988

G. †Balatonites Mojsisovics 1879

G. †Cuccoceras Diener 1907

G. †Ginsburgites Bucher 1992

G. †Huishuites Zhao and Wang 1974

G. †Platycuccoceras Bucher 1988

Fm. †Ceratitidae Mojsisovics 1879

Subfm. †Beyrichitinae Spath 1934

G. †Bugunzhites Shevyrev 1995

Subfm. †Bulogitinae Mietto and Manfrin 2005

Subfm. †Ceratitinae Mojsisovics 1879

Invalid names: Alloceratitinae Kozur 1973 [synonym]

G. †Eutomoceras Hyatt 1877

Subfm. †Nevaditinae Tozer 1994

Subfm. †Paraceratitinae Silberling 1962

G. †Parinaia Fantini Sestini 1994

G. †Peripleurocyclus Diener 1907

G. †Popinites Salopek 1915

Invalid names: Bosnites Frech 1912 [synonym]

Invalid names: Ceratites thuringiacus Riedel 1916 [nomen dubium]

Fm. †Dinaritidae Mojsisovics 1882

G. †Balkanites Ganev 1966

G. †Bittnerites Kittl 1903

G. †Carniolites Arthaber 1911

G. †Cowboyiceras Guex et al. 2005

G. †Dagnoceras Arthaber 1911

G. †Dinarites von Mojsisovics 1882

G. †Pseudodinarites Hyatt 1900

G. †Stacheites Kittl 1903

G. †Sutinaites Golubić 1999

Invalid names: Dagnoceratinae Spath 1934 [invalid subgroup], Dinaritinae von Mojsisovics 1882 [empty]

Fm. †Hungaritidae Waagen 1895

G. †Bullatihungarites Vörös 2018

G. †Gevanites Parnes 1975

G. †Hungarites Mojsisovics 1879

G. †Iberites Hyatt 1900

G. †Israelites Parnes 1962

G. †Negebites Parnes 1962

G. †Nodihungarites Vörös 2018

G. †Paraceratitoides Parnes 1975

G. †Perrinoceras Johnston 1941

Fm. †Rimkinitidae Wang and He 1976

G. †Rimkinites Mojsisovics 1902

G. †Robinsonites Shevyrev 1995

†Robinsonites caucasius Shevyrev 1995

†Robinsonites simionescui Balini and Lăcătuş 2024

Superfm. †Choristoceratoidea Hyatt 1900

Fm. †Choristoceratidae Hyatt 1900

G. †Choristoceras Hauer 1865

G. †Peripleurites Mojsisovics 1893

G. †Rhabdoceras Hauer 1860

G. †Vandaites Tozer 1979

Fm. †Cochloceratidae Hyatt 1900

G. †Cochloceras Hauer 1860

G. †Paracochloceras Mojsisovics 1893

Fm. †Cycloceltitidae Tozer 1979

G. †Cycloceltites Mojsisovics 1893

G. †Neotenoceras Tozer 1994

G. †Ophiorhabdoceras Tozer 1994

Invalid names: Rhabdoceratidae Tozer 1979 [empty]

Superfm. †Clydonitaceae Mojsisovics 1879

Fm. †Clionitidae Arabu 1932

G. †Californites Hyatt and Smith 1905

G. †Clionitites Strand 1929

Invalid names: Clionites Mojsisovics 1893 [replaced]

G. †Indoclionites Diener 1916

G. †Leconteia Hyatt and Smith 1905

Invalid names: Leconteiceras Smith 1914 [objective synonym]

G. †Sympolycyclus Spath 1951

Fm. †Clydonitidae Mojsisovics 1879

G. †Clydonites Hauer 1860

G. †Ophiceltites Tatzreiter 1981

Fm. †Heraclitidae Diener 1920

G. †Heraclites Mojsisovics

G. †Wangoceras Tozer 1980

Fm. †Sandlingitidae Tozer 1971

G. †Eremites Mojsisovics 1893

G. †Glamocites Diener 1917

G. †Sandlingites Mojsisovics 1893

G. †Shastites Hyatt and Smith 1905

G. †Traskites Hyatt and Smith 1905

Fm. †Steinmannitidae Tozer 1994

G. †Alloclionites Spath 1951

G. †Baoenites Tatzreiter 1981

G. †Bihatites Tatzreiter 1980

G. †Brouwerites Diener 1923

G. †Eosteinmannites Tatzreiter 1980

G. †Metaclionites Tozer 1994

G. †Nannosteinmannites Tatzreiter 1985

G. †Scheutzites Tatzreiter 1985

G. †Steinmannites Mojsisovics 1893

Fm. †Thetiditidae Tozer 1971

G. †Acanthothetidites Tatzreiter 1980

G. †Eothetidites Tozer 1994

G. †Helictites Mojsisovics 1893

G. †Idaoceras Tozer 1994

G. †Leislingites Tatzreiter 1980

G. †Nassichukites Tozer 1979

G. †Parathetidites Tozer 1971

G. †Pseudothetidites Jeannet 1958

G. †Thetidites von Mojsisovics 1896

Fm. †Tibetitidae Hyatt 1900

G. †Ammotibetites Krystyn 1982

G. †Anatibetites von Mojsisovics 1896

Subfm. †Cyrtopleuritinae Diener 1925

G. †Lanpingoceras Liang 1977

G. †Metacarnites Diener 1908

G. †Metatibetites Zhao and Wang 1976

G. †Nodotibetites Zhao and Wang 1973

G. †Palicites Gemmellaro 1904

G. †Paratibetites von Mojsisovics 1896

G. †Pterotoceras Welter 1915

G. †Tibetites Mojsisovics 1896

Subfm. †Tibetitinae Hyatt 1900

G. †Coeloceltites Spath 1951

†Coeloceltites rectangularis Hauer 1860

G. †Courtilloticeras Guex et al. 2005

†Courtilloticeras stevensi Guex et al. 2005

Superfm. †Danubitoidea Spath 1951

Fm. †Aplococeratidae Spath 1951

G. †Apleuroceras Hyatt 1900

G. †Aplococeras Hyatt 1900

Invalid names: Pseudaplococeras Spath 1951 [synonym]

G. †Epiceratites Diener 1915

G. †Gervasuttia Fantini Sestini 1994

G. †Laboceras Shevyrev 1961

G. †Metadinarites Spath 1951

G. †Velebites Salopek 1918

Fm. †Danubitidae Spath 1951

G. †Danubites Mojsisovics 1893

Invalid names: Florianites Hyatt 1900 [synonym]

Subfm. †Danubitinae Spath 1951

G. †Eodanubites Wang 1978

G. †Judicarites Mojsisovics 1896

G. †Paradanubites Shevyrev 1968

G. †Pseudodanubites Hyatt 1900

G. †Taimyrites Vavilov and Arkadiev 1986

G. †Unionvillites Silberling and Nichols 1982

Fm. †Lecanitidae Hyatt 1900

G. †Lecanites von Mojsisovics 1882

Fm. †Longobarditidae Spath 1951

Subfm. †Czekanowskitinae Tozer 1994

G. †Dalmatites Kittl 1903

Subfm. †Groenlanditinae Asserto 1966

Subfm. †Longobarditinae Spath 1951

Subfm. †Noetlingitinae Parnes 1975

Invalid names: Grambergiinae Popov 1961 [empty]

Invalid names: Badiotitdae Hyatt 1900 [empty]

Superfm. †Dinaritoidea Mojsisovics 1882

Fm. †Columbitidae Spath 1934

G. †Columbites Hyatt and Smith 1905

G. †Glabercolumbites Guex et al. 2005

G. †Idahocolumbites Guex et al. 2005

G. †Marcouxia Guex et al. 2005

G. †Neocolumbites Zacharov 1968

G. †Paradinarites Zhao 1950

G. †Procolumbites Astachova 1960

G. †Pseudoharpoceras Waagen 1895

G. †Rudolftruempyiceras Guex and Bylund 2010

Invalid names: Boreoceras Dagis and Ermakova 1988 [replaced]

G. †Subcolumbites Spath 1930

G. †Subfengshanites Zakharov et al. 2008

G. †Tardicolumbites Guex et al. 2005

G. †Yvesgalleticeras Guex et al. 2005

Fm. †Hellenitidae Kummel 1952

G. †Hellenites Renz and Renz 1948

Invalid names: Pseudarniotites Spath 1951 [synonym]

Fm. †Kazakhstanitidae Shevyrev 1986

G. †Kazakhstanites Shevyrev 1968

Fm. †Keyserlingitidae Zacharov 1970

G. †Goricanites Guex et al. 2005

G. †Keyserlingites Hyatt 1900

Invalid names: Durgaites Diener 1905 [synonym], Robustites Philippi 1901 [objective synonym]

G. †Monacanthites Tozer 1965

G. †Pseudokeyserlingites Bucher 1989

G. †Subolenekites Zakharov 1978

Fm. †Khvalynitidae Tozer 1981

G. †Alanites Shevyrev 1968

G. †Ismidites Arthaber 1915

G. †Khvalynites Shevyrev 1968

G. †Koipatoceras Silberling and Nichols 1982

G. †Metadagnoceras Tozer 1965

G. †Vorobyevites Shevyrev 1995

Fm. †Olenikitidae Tozer 1971

G. †Hyrcanites Shevyrev 1968

G. †Olenikites Hyatt 1900

G. †Pseudosvalbardiceras Dagis and Ermakova 1988

G. †Svalbardiceras Frebold 1930

G. †Tjururpites Shevyrev 1968

Fm. †Paragoceratidae Guex et al. 2010

G. †Ceccaisculitoides Guex et al. 2005

G. †Epiceltitoides Guex 1978

G. †Fengshanites Chao 1950

G. †Isculitoides Spath 1930

Invalid names: Isculites Arthaber 1911 [replaced]

G. †Paragoceras Arthaber 1911

Invalid names: Arnautoceltites Diener 1916 [synonym]

G. †Prenkites Arthaber 1911

G. †Tunglanites Zhao 1959

Fm. †Sibiritidae Mojsisovics 1896

G. †Epiboreoceras Dagys 1999

G. †Olenekoceras

G. †Parasibirites Popov 1962

G. †Praesibirites Dagis and Ermakova 1988

G. †Sibirites Mojsisovics 1886

Subfm. †Silberlingitinae Bucher 1989

G. †Timoceras Dagis and Ermakova 1988

Fm. †Stephanitidae Arthaber 1896

G. †Amphistephanites Zakharov 1978

G. †Parastephanites Hyatt 1900

Invalid names: Acrochordiceroides Spath 1929 [synonym]

G. †Stephanites Waagen 1895

Fm. †Tirolitidae von Mojsisovics 1882

G. †Diaplococeras Hyatt 1900

G. †Dorikranites Hyatt 1889

Invalid names: Subdoricranites Astakhova 1960 [synonym]

G. †Tirolites Mojsisovics 1879

Invalid names: Hololobus Kittl 1903 [synonym], Svilajites Kittl 1903 [synonym], Tirolitoides Spath 1934 [synonym]

Invalid names: Dorikranitidae Astachova 1960 [synonym]

G. †Eschericeratites Guex et al. 2005

†Eschericeratites lytoceratoides Guex et al. 2005

G. †Haidingerites Mojsisovics 1893

†Haidingerites acutinodis Hauer 1860

G. †Jeanbesseiceras Guex et al. 2005

†Jeanbesseiceras jacksoni Hyatt and Smith 1905

G. †Larenites Brayard and Bucher 2008

†Larenites reticulatus Tozer 1994

Superfm. †Lobitaceae Mojsisovics 1882

Fm. †Lobitidae von Mojsisovics 1882

G. †Coroceras Hyatt 1877

G. †Indolobites Renz 1911

G. †Lobites von Mojsisovics 1875

G. †Orestites Renz 1910

G. †Paralobites von Mojsisovics 1902

G. †Psilolobites Renz 1911

Superfm. †Meekocerataceae Waagen 1895

Fm. †Byrrangoceratidae Dagys 1997

G. †Byrrangoceras Dagys 1997

Fm. †Flemingitidae Hyatt 1900

G. †Anaflemingites Kummel and Steele 1962

G. †Anaxenaspis Kiparisova 1956

G. †Baidites Brühwiler and Bucher 2012

G. †Balhaeceras Shigeta and Zakharov 2009

G. †Bandoites Zakharov 1987

G. †Euflemingites Spath 1934

G. †Flemingites Waagen 1892

G. †Guangxiceras Brayard and Bucher 2008

G. †Hermannites Brühwiler et al. 2012

G. †Palaeokazachstanites Zakharov 1978

G. †Pseudoflemingites Spath 1930

G. †Rohillites Waterhouse 1996

G. †Shamaraites Shigeta and Zakharov 2009

G. †Subbalhaeceras Zakharov and Moussavi Abnavi 2013

G. †Subflemingites Spath 1934

G. †Ussuriflemingites Shigeta and Zakharov 2009

G. †Xenodiscoides Spath 1930

Fm. †Gyronitidae Waagen 1895

G. †Abrekites Shigeta and Zakharov 2009

G. †Ambites Waagen 1895

Invalid names: Gyrolecanites Spath 1934 [synonym], Lilangia Waterhouse 1996 [synonym], Pleurambites Tozer 1994 [synonym]

G. †Gyronites Waagen 1895

G. †Gyrophiceras Spath 1934

G. †Kingites Waagen 1895

G. †Kymatites Waagen 1895

G. †Lingyunites Chao 1950

G. †Meekophiceras Tozer 1994

G. †Mudiceras Brühwiler et al. 2010

G. †Parakymatites Waagen 1895

G. †Subradioceras Smyshlyaeva and Zakharov 2015

Invalid names: Catalecanites Spath 1934 [nomen dubium]

Fm. †Ophiceratidae Arthaber 1911

G. †Discophiceras Spath 1935

G. †Ghazalaites Ware and Bucher 2018

G. †Kyoktites Ware and Bucher 2018

G. †Lytophiceras Spath 1930

G. †Ophiceras Griesbach 1880

Invalid names: Acanthophiceras Diener 1916 [synonym]

G. †Protophiceras Hyatt 1900

G. †Shangganites Brühwiler et al. 2008

G. †Vishnuites Diener 1897

Invalid names: Pseudovishnuites Zakharov and Mu 2007 [synonym]

G. †Wordieoceras Tozer 1971

Subor. †Meekoceratina

Superfm. †Meekoceratoidea Waagen 1895

Fm. †Albanitidae Tozer 1994

Fm. †Arctoceratidae Arthaber 1911

Fm. †Dieneroceratidae Kummel 1952

Fm. †Inyoitidae Spath 1934

Fm. †Melagathiceratidae Tozer 1971

Fm. †Mullericeratidae Ware et al. 2011

Fm. †Prionitidae Hyatt 1900

Fm. †Proptychitidae Waagen 1895

Superfm. †Megaphyllitoidea Mojsisovics 1896

Fm. †Megaphyllitidae Mojsisovics 1896

G. †Dobrogeites Kittl 1908

G. †Humboldtites Silberling and Nichols 1982

G. †Megaphyllites Mojsisovics 1879

G. †Metasturia Spath 1951

G. †Nitanoceras McLearn 1937

G. †Ptychopopanoceras Spath 1951

Fm. †Parapopanoceratidae Tozer 1971

G. †Amphipopanoceras Vovina 1947

G. †Globopopanoceras Waterhouse 1997

Invalid names: Neopopanoceras Spath 1951 [replaced]

G. †Parapopanoceras Haug 1894

G. †Stenopopanoceras Popov 1961

Fm. †Procarnitidae Zhao 1959

G. †Digitophyllites Zhao 1950

G. †Procarinites Arthaber 1911

G. †Procarnites Arthaber 1911

Fm. †Prosphingitidae Zacharov 1978

G. †Prosphingites Mojsisovics 1886

G. †Metussuria Spath 1934

Superfm. †Nathorstitaceae Spath 1951

Fm. †Nathorstitidae Spath 1951

G. †Indigirites Popov 1947

G. †Metasphingites Popov 1961

G. †Nathorstites Boehm 1903

Invalid names: Paraindigirites Popov 1946 [synonym]

G. †Stolleyites Archipov 1974

Fm. †Proteusitidae Spath 1951

G. †Proteusites Hauer 1887

G. †Tozerites Silberling and Nichols 1982

G. †Tropigastrites Smith 1914

Fm. †Thanamitidae Tozer 1971

G. †Drumoceras Wang and He 1976

G. †Otoceltites Diener 1916

G. †Thanamites Diener 1908

Fm. †Tsvetkovitidae Dagys and Konstantinov 1997

G. †Eonathorstites Tozer 1994

G. †Tsvetkovites Vavilov and Korchinskya 1973

Invalid names: Sudordachites Archipov 1974 [synonym]

Superfm. †Noritoidea Karpinsky 1889

Fm. †Lanceolitidae Spath 1934

G. †Lanceolites Hyatt and Smith 1905

Fm. †Noritidae Karpinsky 1889

G. †Ananorites Diener 1907

G. †Arthaberites Diener 1900

G. †Bosnites Hauer 1896

G. †Doaboceras Boulin et al. 1979

G. †Metahedenstroemia Spath 1934

G. †Neoclypites Spath 1951

G. †Norites Mojsisovics 1869

G. †Subalbanites Zakharov 1978

Invalid names: Ananorites Diener 1907 [valid], Arthaberites Diener 1900 [valid], Bosnites Hauer 1896 [valid], Doaboceras Boulin et al. 1979 [valid], Metahedenstroemia Spath 1934 [valid], Neoclypites Spath 1951 [valid], Norites Mojsisovics 1869 [valid], Subalbanites Zakharov 1978 [valid]

Fm. †Noritidae Karpinsky 1889

G. †Ananorites Diener 1907

G. †Arthaberites Diener 1900

G. †Bosnites Hauer 1896

G. †Doaboceras Boulin et al. 1979

G. †Metahedenstroemia Spath 1934

G. †Neoclypites Spath 1951

G. †Norites Mojsisovics 1869

G. †Subalbanites Zakharov 1978

Fm. †Paranoritidae Spath 1930

G. †Awanites Ware and Bucher 2018

G. †Koiloceras Brühwiler and Bucher 2012

G. †Koninckites Waagen 1895

Invalid names: Prejuvenites Waterhouse 1996 [synonym]

G. †Paranorites Waagen 1895

G. †Pashtunites Ware and Bucher 2018

G. †Radioceras Waterhouse 1996

G. †Vavilovites Tozer 1971

G. †Obrutchevites Vavilov 1977

†Obrutchevites prodigialis Vavilov 1977

Subor. †Otoceratina Shevyrev and Ermakova 1979

Superfm. †Otoceratoidea Hyatt 1900

Fm. †Anderssonoceratidae Ruzhencev 1959

Fm. †Araxoceratidae Ruzhencev 1959

Fm. †Otoceratidae Hyatt 1900

Invalid names: Vavilovitidae Zakharov 2002 [empty]

Fm. †Owenitidae Spath 1934

G. †Parasphingites Popov 1961

†Parasphingites janaensis Popov 1961

G. †Paraacrochordiceras

Subor. †Paraceltitina Shevyrev 1968

Superfm. †Xenodiscoidea Frech 1902

Fm. †Dzhulfitidae Shevyrev 1965

Fm. †Dzulfitidae Shevyrev 1965

Fm. †Hemilecanitidae Guex et al. 2010

Fm. †Huananoceratidae Zhao et al. 1978

Fm. †Kashmiritidae Spath 1934

G. †Kraffticeras Brühwiler et al. 2012

Fm. †Liuchengoceratidae Zhao et al. 1978

Fm. †Paraceltitidae Spath 1930

Fm. †Pleuronodoceratidae Zhao et al. 1978

Fm. †Pseudotirolitidae Zhao 1965

Fm. †Tapashanitidae Zhao et al. 1978

Fm. †Xenoceltitidae Spath 1930

Fm. †Xenodiscidae Frech 1902

G. †Paraganides Hyatt and Smith 1905

†Paraganides californicus Hyatt and Smith 1905

G. †Paratibites

Superfm. †Pinacoceratoidea Mojsisovics 1879

Fm. †Carnitidae Arthaber 1911

G. †Carnites Mojsisovics 1873

G. †Pseudocarnites Simionescu 1913

Fm. †Gymnitidae Waagen 1895

G. †Constrigymnites Bucher 1992

G. †Costigymnites Krystyn and Tatzreiter 1991

G. †Eogymnites Spath 1951

G. †Epigymnites Diener 1916

G. †Gymnites von Mojsisovics 1882

Subfm. †Gymnitinae Tozer 1994

Subfm. †Japonitinae Tozer 1971

G. †Kiparisovia Bychkov et al. 1976

G. †Parapinacoceras Diener 1916

G. †Paraplacites Oravecz 1962

G. †Phyllytoceras Wiedmann 1970

Subfm. †Placitinae Wang and He 1976

G. †Protoplatytes Cockerell 1905

Invalid names: Platytes von Mojsisovics 1902 [replaced]

G. †Tropigymnites Spath 1951

G. †Xiphogymnites Spath 1951

Fm. †Japonitidae Tozer 1971

G. †Aegeiceras Fantini Sestini 1981

G. †Bukowskiites Diener 1907

G. †Japonites Mojsisovics 1893

Fm. †Klamathitidae Tozer 1994

G. †Dieneria Hyatt and Smith 1905

G. †Klamathites Smith 1927

G. †Parahauerites Diener 1916

Invalid names: Fremontites Smith 1927 [objective synonym]

Fm. †Pinacoceratidae Mojsisovics 1879

G. †Bambanagites von Mojsisovics 1896

G. †Eupinacoceras Spath 1951

Invalid names: Parapinacoceras Arthaber 1927 [replaced]

G. †Pinacoceras von Mojsisovics 1873

G. †Pinacoplacites Diener 1916

G. †Pompeckjites von Mojsisovics 1902

G. †Praepinacoceras Fantini Sestini 1992

Invalid names: Ptychitinae von Mojsisovics 1882 [empty]

Fm. †Ptychitidae von Mojsisovics 1882

G. †Arctoptychites Archipov et al. 1974

G. †Aristoptychites Diener 1916

G. †Eosturia Bando and Ehiro 1982

G. †Flexoptychites Spath 1951

G. †Istreites Simionescu 1913

G. †Lanceoptychites Balini 1998

G. †Malletophychites

G. †Malletoptychites Diener 1916

G. †Ptychites Mojsisovics 1875

Fm. †Sturiidae Kipsarova 1958

G. †Discoptychites Diener 1916

G. †Parasturia Spath 1951

G. †Psilosturia Diener 1916

G. †Sturia von Mojsisovics 1882

G. †Ziyunites Wang 1978

G. †Poporites

G. †Proavites Arthaber 1896

†Proavites benigari Kraus 1916

†Proavites hueffeli Arthaber 1896

Invalid names: Proavites avitus Arthaber 1896 [synonym], Proavites marginatus Arthaber 1896 [synonym]

G. †Procurvoceratites Brayard and Bucher 2008

†Procurvoceratites ampliatus Brayard and Bucher 2008

†Procurvoceratites pygmaeus Brayard and Bucher 2008

†Procurvoceratites subtabulatus Brayard and Bucher 2008

Subor. †Proptychitina Zakharov and Moussavi Abnavi 2013

Superfm. †Proptychitoidea Waagen 1895

Invalid names: Clypeoceratidae Waterhouse 1996 [empty]

G. †Protoceras Spath 1930

Superfm. †Ptychitaceae Mojsisovics 1882

Fm. †Eosagenitidae Tozer 1994

G. †Eosagenites Tozer 1971

G. †Girthiceras Diener 1909

Fm. †Isculitidae Spath 1951

G. †Columbisculites Tozer 1994

G. †Hypisculties Spath 1951

G. †Isculites Mojsisovics 1886

Invalid names: Alloptychites Spath 1951 [synonym], Smithoceras Diener 1907 [synonym], Spitisculites Diener 1916 [objective synonym]

G. †Phyllosphaerites Shevyrev 1995

G. †Ptychosphaerites Spath 1951

Invalid names: Sphaerites Arthaber 1896 [replaced]

Superfm. †Sagecerataceae Hyatt 1884

Fm. †Aspenitidae Spath 1934

G. †Aspenites Hyatt and Smith 1905

Invalid names: Hemiaspenites Kummel and Steele 1962 [synonym]

G. †Beatites Arthaber 1911

G. †Pseudaspenites Spath 1934

G. †Ussuriaspenites Zakharov and Smyshlyaeva 2013

Fm. †Hedenstroemiidae Waagen 1895

G. †Beneckeia von Mojsisovics 1882

G. †Clypites Waagen 1895

G. †Cordillerites Hyatt and Smith 1905

Invalid names: Epihedenstroemia Spath 1934 [synonym]

G. †Hedenstroemia Waagen 1895

Invalid names: Anahedenstroemia Hyatt 1900 [synonym], Pseudohedenstroemia [synonym]

Subfm. †Hedenstromeniinae Waagen 1895

G. †Mesohedenstroemia Chao 1959

G. †Parahedenstroemia Spath 1934

G. †Pseudosageceras Diener 1895

Invalid names: Frechiceras von Krafft 1902 [synonym], Lilastroemia Waterhouse 1996 [synonym]

G. †Tellerites Mojsisovics 1902

Invalid names: Aspenitinae Spath 1934 [empty], Beneckeiinae Waagen 1895 [empty], Lanceolitinae Spath 1934 [empty]

Fm. †Sageceratidae Hyatt 1884

G. †Parasageceras Welter 1915

G. †Sageceras Mojsisovics 1873

G. †Stolleites

G. †Subacerites Ware and Bucher 2018

†Subacerites friski Ware and Bucher 2018

G. †Tapponnierites Guex et al. 2005

†Tapponnierites tenuicostatus Guex et al. 2005

Superfm. †Trachyceratoidea Haug 1894

Fm. †Buchitidae Hyatt 1900

G. †Buchites Mojsisovics 1900

Fm. †Distichitidae Diener 1920

G. †Distichites Mojsisovics 1893

G. †Ectolcites Mojsisovics 1893

G. †Leiodistichites Tozer 1994

G. †Mesodistichites Krystyn et al. 2019

G. †Paradistichites Diener 1916

G. †Pleurodistichites Tozer 1980

G. †Trachypleuraspidites Diener 1906

Fm. †Dronovitidae Shevyrev 1990

G. †Dronovites Shevyrev 1990

Fm. †Noridiscitidae Spath 1951

G. †Nairites Kiparisova and Azarian 1963

G. †Noridiscites Spath 1951

Fm. †Trachyceratidae Haug 1894

Subfm. †Anolcitinae Mietto and Manfrin 2008

Subfm. †Arpaditinae Hyatt 1900

G. †Boreotrachyceras Konstantinov 2012

G. †Brotheotrachyceras Urlichs 1994

G. †Hannaoceras Tomlin 1931

Invalid names: Polycyclus Mojsisovics 1889 [replaced], Polysphinctoceras Spath 1934 [objective synonym], Smithoceras Hanna 1924 [replaced]

Subfm. †Haoceratinae Balini and Zou 2015

G. †Langdaiceras Wang 1983

G. †Nannites Mojsisovics 1881

G. †Okhototrachyceras Konstantinov 2012

Subfm. †Protrachyceratinae Tozer 1971

Subfm. †Sirenitinae Tozer 1971

Subfm. †Trachyceratinae Haug 1894

Invalid names: Nannitidae Diener 1897 [synonym]

Invalid names: Arpaditidae Hyatt 1900 [empty]

Superfm. †Tropitaceae Mojsisovics 1875

Fm. †Adygeitidae Shevyrev 1995

G. †Adygeites Shevyrev 1995

Fm. †Didymitidae Haug 1894

G. †Didymites von Mojsisovics 1875

G. †Neodidymites Tozer 1994

G. †Paradidymites Diener 1916

G. †Timorodidymites Diener 1916

Fm. †Episculitidae Spath 1951

G. †Episculites Spath 1951

G. †Hypisculites Spath 1951

G. †Martolites Diener 1916

G. †Parisculites Tozer 1994

Fm. †Haloritidae Mojsisovics 1893

G. †Anatomites Mojsisovics 1893

G. †Gnomohalorites Tozer 1979

G. †Halorites Mojsisovics 1879

Subfm. †Haloritinae Mojsisovics 1893

Subfm. †Juvavitinae Tozer 1971

G. †Molengraaffites Welter 1914

G. †Paraguembelites Tozer 1979

G. †Parajuvavites von Mojsisovics 1896

Subfm. †Sagenitinae Spath 1951

Subfm. †Tropihaloritinae Shevyrev 1990

Fm. †Juvavitidae Tozer 1971

G. †Bacchites Smith 1927

G. †Dimorphites Mojsisovics 1893

G. †Discomalayites Tozer 1994

G. †Dryojuvavites Tozer 1994

G. †Epijuvavites Krystyn 1982

G. †Goniojuvavites Krystyn 1982

G. †Gonionotites Gemmellaro 1904

G. †Griesbachites von Mojsisovics 1896

G. †Guembelites Mojsisovics 1896

G. †Indojuvavites Diener 1916

G. †Juvavites Mojsisovics 1879

G. †Malayites Welter 1914

Invalid names: Heinrichites Diener 1921 [synonym]

G. †Margarijuvavites Tozer 1994

G. †Omojuvavites Tozer 1994

G. †Projuvavites Tozer 1971

G. †Pseudocardioceras Tozer 1971

Fm. †Metasibiritidae Spath 1951

G. †Gabboceras Taylor and Guex 2002

G. †Lissonites Tozer 1979

G. †Metasibirites Mojsisovics 1896

G. †Tozeria Tatzreiter 1985

Fm. †Parathisbitidae Tozer 1994

G. †Daphnites Mojsisovics 1893

G. †Jellinekites Diener 1906

G. †Parathisbites Mojsisovics 1893

G. †Phormedites Mojsisovics 1893

G. †Siculites Gemmellaro 1904

Fm. †Thisbitidae Spath 1951

G. †Glyphidites

G. †Hadrothisbites Tozer 1994

G. †Metathisbites Tozer 1994

G. †Mojsisovicsites Gemmellaro 1904

G. †Stikinoceras McLearn 1930

G. †Thisbites Mojsisovics 1893

G. †Tropithisbites Tozer 1994

Fm. †Tropiceltitidae Spath 1951

G. †Arnioceltites Mojsisovics 1893

G. †Discostyrites Tozer 1994

G. †Styrites Mojsisovics 1893

G. †Tardeceras Hyatt and Smith 1905

G. †Tornquistites Hyatt and Smith 1905

G. †Tropiceltites Mojsisovics 1893

Fm. †Tropitidae Mojsisovics 1875

G. †Acanthotropites Tozer 1994

G. †Anatropites Mojsisovics 1893

G. †Arctotropites Tozer 1994

G. †Arietoceltites Diener 1916

G. †Discotropites Hyatt and Smith 1905

Invalid names: Pleuropinacoceras Wang and He 1976 [synonym]

G. †Euisculites Spath 1951

G. †Gymnotropites Hyatt and Smith 1905

G. †Homerites Mojsisovics 1893

G. †Homeroceras Tozer 1994

G. †Hoplotropites Spath 1929

Invalid names: Margarites Mojsisovics 1893 [replaced]

G. †Indonesites Welter 1914

G. †Jovites Mojsisovics 1893

Invalid names: Timorotropites Diener 1916 [synonym]

G. †Margaritropites Diener 1916

G. †Microtropites Mojsisovics 1893

G. †Paratropites Mojsisovics 1893

G. †Paulotropites Mojsisovics 1893

G. †Platotropites Wang and He 1976

G. †Pleurotropites Tozer 1994

G. †Sibyllites Mojsisovics 1893

G. †Tritropidoceras Schenk 1935

G. †Tropites Mojsisovics 1875

Invalid names: Tropiceltidae Spath [empty]

Invalid names: Arcestina [empty], Ceratites whitneyi Gabb 1864 [nomen vanum], Ceratitiaceae Mojsisovics 1879 [empty], Cycloceratidae [empty], Glabrites Waterhouse 1999 [nomen dubium], Glabrites involucrus Waterhouse 1999 [nomen dubium], Lobitina [empty], Megaphyllitina [empty], Otocerina [empty], Pinacocerina [empty], Ptychitina [empty]

Or. †Clymeniida Hyatt 1884

G. †Borkinia

Subor. †Clymeniina Hyatt 1884

Superfm. †Clymeniaceae Edwards 1849

Fm. †Clymeniidae Edwards 1849

Fm. †Kosmoclymeniidae Korn and Price 1987

Superfm. †Gonioclymeniaceae Hyatt 1884

Fm. †Costaclymeniidae Ruzhencev 1957

Fm. †Gonioclymeniidae Hyatt 1884

Fm. †Sellaclymeniidae Schindewolf 1923

Fm. †Sphenoclymeniidae Korn 1992

Superfm. †Platyclymeniaceae Wedekind 1914

Fm. †Glatziellidae Schindewolf 1928

Fm. †Piriclymeniidae Korn 1992

Fm. †Platyclymeniidae Wedekind 1914

Subor. †Cyrtoclymeniina Korn 2002

Superfm. †Cyrtoclymenioidea Hyatt 1884

Fm. †Carinoclymeniidae Bogoslovsky 1975

Fm. †Cymaclymeniidae Hyatt 1884

Fm. †Cyrtoclymeniidae Hyatt 1884

Fm. †Rectoclymeniidae Schindewolf 1923

Subor. †Gonioclymeniina Ruzhencev 1957

Superfm. †Sellaclymeniaceae Schindewolf 1923

Fm. †Miroclymeniidae Schindewolf 1924

Invalid names: Parawocklumeriaceae Schindewolf 1937 [empty]

G. †Kazakhoclymenia

Subor. †Wocklumeriina Becker 1997

Superfm. †Biloclymeniaceae Bogoslovsky 1955

Fm. †Biloclymeniidae Bogoslovsky 1955

Fm. †Pachyclymeniidae Korn 1992

Superfm. †Glatziellaceae Schindewolf 1928

Invalid names: Hexaclymeniidae Lange 1929 [empty]

Superfm. †Wocklumeriaceae Schindewolf 1937

Fm. †Parawocklumeriidae Schindewolf 1937

Fm. †Wocklumeriidae Schindewolf 1937

G. †Cornaptychus Trauth 1927 [ammonoid aptychus]

G. †Egrabensiceras Busnardo et al. 1964

G. †Epimayaites Spath 1928

G. †Eubranoceras Breistroffer 1951

G. †Forbesiceras Kossmat 1897

Or. †Goniatitida Hyatt 1884

G. †Aphanites

Subor. †Goniatitina Hyatt 1884

Superfm. †Adrianitoidea Schindewolf 1931

Fm. †Adrianitidae Schindewolf 1931

Fm. †Palermoceratidae Zhou and Glenister 2009

Invalid names: Hoffmanniinae Spath 1934 [replaced]

Superfm. †Agathiceratoidea Arthaber 1911

Fm. †Agathiceratidae Arthaber 1911

Superfm. †Cycloloboidea Zittel 1895

Fm. †Cyclolobidae Zittel 1895

Fm. †Vidrioceratidae Plummer and Scott 1937

Invalid names: Neostacheoceratidae Toumansky 1939 [synonym]

Superfm. †Dimorphoceratoidea Hyatt 1884

Fm. †Anthracoceratidae Plummer and Scott 1937

Fm. †Berkhoceratidae Librovitch 1957

Fm. †Dimorphoceratidae Hyatt 1884

Fm. †Eogonioloboceratidae Ruzhentsev and Bogoslovskaya 1978

Superfm. †Gastrioceratoidea Hyatt 1884

Fm. †Gastrioceratidae Hyatt 1884

Fm. †Glaphyritidae Ruzhentsev and Bogoslovskaya 1971

Fm. †Homoceratidae Spath 1934

Fm. †Reticuloceratidae Librovitch 1957

Superfm. †Girtyocerataceae Wedekind 1918

Fm. †Entogonitidae Ruzhentsev and Bogoslovskaya 1971

Fm. †Girtyoceratidae Wedekind 1918

Fm. †Goniatitidae Haan 1825

Subfm. †Antegoniatitinae Korn et al. 2010

G. †Arnsbergites Korn 1988

G. †Goniatitella Korn 1988

G. †Goniatites Haan 1825

Invalid names: Glyphioceras Hyatt 1884 [synonym]

Subfm. †Habadraitinae Korn et al. 2010

G. †Hibernicoceras Moore and Hodson 1958

G. †Hypergoniatites Ruzhencev and Bogoslovskaya 1970

G. †Junggarites Liang and Wang 1991

G. †Neoglyphioceras Brüning 1923

G. †Neogoniatites Ruzhencev and Bogoslovskaya 1970

G. †Paraglyphioceras Brüning 1923

Subfm. †Progoniatitinae Korn et al. 2010

G. †Sygambrites Korn 1988

Invalid names: Goniatitinae Haan 1825 [empty], Sygambritinae Korn 1988 [empty]

Superfm. †Goniatitoidea Haan 1825

Fm. †Delepinoceratidae Ruzhencev 1957

Superfm. †Gonioloboceratoidea Spath 1934

Fm. †Gonioloboceratidae Spath 1934

Fm. †Wiedeyoceratidae Ruzhentsev and Bogoslovskaya 1978

Invalid names: Gonioglyphioceratidae Ruzhentsev and Bogoslovskaya 1978 [empty]

Superfm. †Marathonitoidea Ruzhencev 1938

Fm. †Hyattoceratidae Miller and Furnish 1957

Fm. †Marathonitidae Ruzhencev 1938

Superfm. †Neodimorphoceratoidea Furnish and Knapp 1966

Fm. †Neodimorphoceratidae Furnish and Knapp 1966

Fm. †Ramositidae Ruzhencev and Bogoslovskaya 1969

Superfm. †Neoglyphioceratoidea Plummer and Scott 1937

Fm. †Cravenoceratidae Ruzhencev 1957

Fm. †Ferganoceratidae Ruzhencev 1960

Fm. †Neoglyphioceratidae Plummer and Scott 1937

Fm. †Rhymmoceratidae Ruzhentsev and Bogoslovskaya 1971

Superfm. †Neoicoceratoidea Hyatt 1900

Fm. †Eupleuroceratidae Ruzhencev 1957

Fm. †Metalegoceratidae Plummer and Scott 1937

Invalid names: Pericycloceratidae Zhao and Zheng 1977 [synonym]

Fm. †Neoicoceratidae Hyatt 1900

Fm. †Paragastrioceratidae Ruzhencev 1951

Fm. †Spirolegoceratidae Nassichuk 1970

Invalid names: Anuitidae Andrianov 1985 [empty], Aulacogastrioceratidae Zhao and Zheng 1977 [empty], Pseudogastrioceratidae Ruzhencev 1951 [empty]

Superfm. †Nomismoceratoidea Librovitch 1957

Fm. †Nomismoceratidae Librovitch 1957

Superfm. †Pericycloidea Hyatt 1900

Fm. †Intoceratidae Kusina 1971

Fm. †Maxigoniatitidae Korn et al. 1999

Fm. †Muensteroceratidae Librovitch 1957

Fm. †Pericyclidae Hyatt 1900

Fm. †Rotopericyclidae Korn et al. 2010

Fm. †Temertassetiidae Korn et al. 2010

Invalid names: Furnishoceratidae Work and Nassichuk 2000 [empty], Kozhimitidae Kusina 1971 [empty], Sudeticeratidae Korn and Ebbighausen 2006 [empty]

Superfm. †Popanoceratoidea Hyatt 1900

Fm. †Mongoloceratidae Ruzhentsev and Bogoslovskaya 1978

Fm. †Popanoceratidae Hyatt 1900

Superfm. †Schistoceratoidea Schmidt 1929

Fm. †Christioceratidae Nassichuk and Furnish 1965

Fm. †Orulganitidae Ruzhencev 1965

Fm. †Pseudoparalegoceratidae Librovitch 1957

Fm. †Schistoceratidae Schmidt 1929

Fm. †Welleritidae Plummer and Scott 1937

Superfm. †Shumarditoidea Plummer and Scott 1937

Fm. †Parashumarditidae Boardman et al. 1994

Fm. †Perrinitidae Miller and Furnish 1940

Fm. †Shumarditidae Plummer and Scott 1937

Fm. †Somoholitidae Ruzhencev 1938

Superfm. †Somoholitoidea Ruzhencev 1938

Fm. †Eoshumarditidae Kutygin 2016

Fm. †Stenolaphyritidae Ruzhencev and Bogoslovskaya 1971

Invalid names: Clistoceratidae Ruzhencev 1975 [empty]

Superfm. †Thalassoceratoidea Hyatt 1900

Fm. †Bisatoceratidae Miller and Furnish 1957

Fm. †Thalassoceratidae Hyatt 1900

G. †Osmanoceras Kittl 1903

†Osmanoceras undulatum Kittl 1903

G. †Prehoffmannia Plummer and Scott 1937

†Prehoffmannia milleri Plummer and Scott 1937

G. †Schuichengoceras

G. †Terektites

G. †Thallassoceras Gemmellaro 1887

Subor. †Tornoceratina Wedekind 1918

Superfm. †Dimeroceratoidea Hyatt 1884

Invalid names: Dimerocerataceae Hyatt 1884 [replaced]

Superfm. †Karagandoceratoidea Librovich 1957

Fm. †Karagandoceratidae Librovitch 1957

Fm. †Prodromitidae Arthaber 1911

Superfm. †Praeglyphioceratoidea Ruzhencev 1957

Fm. †Praeglyphioceratidae Ruzhencev 1957

Fm. †Sporadoceratidae Miller and Furnish 1957

Superfm. †Prionoceratoidea Hyatt 1884

Fm. †Acrocanitidae Korn and Ebbighausen 2006

Fm. †Cheiloceratidae Frech 1897

Fm. †Gattendorfiidae Bartzsch and Weyer 1987

Fm. †Prionoceratidae Hyatt 1884

Fm. †Pseudarietitidae Bartzsch and Weyer 1987

Fm. †Voehringeritidae Bartzsch and Weyer 1988

Superfm. †Pseudohaloritoidea Ruzhencev 1957

Fm. †Maximitidae Ruzhencev 1960

Fm. †Pseudohaloritidae Ruzhencev 1957

Superfm. †Tornocerataceae Arthaber 1911

Fm. †Kirsoceratidae Korn 2002

Fm. †Parodoceratidae Petter 1959

Fm. †Pseudoclymeniidae Becker 1993

Fm. †Tornoceratidae Arthaber 1911

Superfm. †Tornoceratoidea Arthaber 1911

Fm. †Posttornoceratidae Bogoslovsky 1962

Invalid names: Praeglyphioceratina Ruzhencev 1957 [synonym]

G. †Unquatornoceras House 1965

Invalid names: Adrianitina Leonova 2002 [empty], Cyclolobina Leonova 2002 [empty], Imitoceratidae Ruzhentsev 1950 [empty]

G. †Laevaptychus Trauth 1927 [ammonoid aptychus]

Fm. †Lenticeratidae Hyatt 1900

Invalid names: Eulophoceratidae Hyatt 1903 [synonym]

Or. †Lytocerida

Invalid names: Lytocerina [empty], Turrilitina [empty]

Or. †Phylloceratida Zittel 1884

Superfm. †Phylloceratoidea Zittel 1884

Fm. †Discophyllitidae Spath 1927

G. †Discophyllites Hyatt 1900

G. †Indigirophyllites Popov 1961

G. †Rhacophyllites Zittel 1884

Invalid names: Diphyllites Julien 1911 [synonym], Triphyllites Julien 1911 [synonym]

G. †Tragorhacoceras Spath 1927

Fm. †Juraphyllitidae Arkell 1950

G. †Fergusonites Guex 1980

G. †Juraphyllites Müller 1939

G. †Nevadaphyllites Guex 1980

G. †Paradasyceras

G. †Schistophylloceras Hyatt 1900

G. †Togaticeras Rakús 1993

G. †Tragophylloceras Hyatt 1900

Fm. †Phylloceratidae Zittel 1884

Subfm. †Calliphylloceratinae Spath 1927

G. †Dasyceras Hyatt 1900

Subfm. †Phylloceratinae Zittel 1884

Subfm. †Ptychophylloceratinae Collignon 1956

Invalid names: Phyllopachyceratinae Collignon 1937 [empty]

Superfm. †Ussuritoidea Hyatt 1900

Fm. †Galfettitidae Brühwiler and Bucher 2012

G. †Galfettites Brayard and Bucher 2008

G. †Lepiskites Dagis and Ermakova 1990

G. †Pseudogalfettites Smyshlyaeva and Zakharov 2021

G. †Safraites Brühwiler and Bucher 2012

G. †Shigetaceras Brühwiler et al. 2010

G. †Urdyceras Brayard and Bucher 2008

G. †Vercherites Brühwiler et al. 2010

Fm. †Nordophiceratidae Popov 1961

G. †Nordophiceras Popov 1961

Invalid names: Arctotirolites Popov 1963 [synonym]

G. †Nordophiceratoides Guex et al. 2005

G. †Subinyoites Spath 1930

Fm. †Palaeophyllitidae Popov 1958

G. †Artyomites Smyshlyaeva and Zakharov 2021

G. †Burijites Zakharov 1978

G. †Eophyllites Spath 1930

G. †Goudemandites Brühwiler and Bucher 2012

G. †Kamenushkaites Zakharov and Smyshlyaeva 2016

G. †Leiophyllites Diener 1915

G. †Mangyshlakites Shevyrev 1968

G. †Meropella Renz and Renz 1948

G. †Mianwaliites Brühwiler and Bucher 2012

G. †Palaeophyllites Welter 1922

G. †Stenophyllites Tozer 1994

G. †Ussuriphyllites Zakharov 1967

Fm. †Ussuritidae Hyatt 1900

G. †Arctophyllites Konstantinov 1995

G. †Coscaites Guex et al. 2005

G. †Eopsiloceras Spath 1930

G. †Metatirolites Mojsisovics 1893

G. †Metussuria Spath 1934

G. †Mojsvarites Pompeckj 1895

G. †Monophyllites Mojsisovics 1879

Subfm. †Monophyllitinae Smith 1913

G. †Oxyussuria Tozer 1994

G. †Popovites Tozer 1965

G. †Spinoleiophyllites Liao 1978

G. †Ussurites Hyatt 1900

G. †Vickohlerites Kummel 1968

G. †Wopfingites Wiedmann 1970

Invalid names: Ussuritinae Hyatt 1900 [empty]

Invalid names: Ussuritina Zakharov and Moussavi Abnavi 2013 [empty]

Or. †Phylloceratitida Zittel 1884

G. †Kolymophylloceras Repin et al. 1998

G. †Nevadophyllites

G. †Platyphylloceras Repin et al. 1998

G. †Yukagirites Repin et al. 1998

Or. †Prolecanitida Miller and Furnish 1954

Subor. †Medlicottiina Zakharov 1984

Invalid names: Pronoritaceae Frech 1901 [empty]

Superfm. †Medlicottioidea Karpinsky 1889

Fm. †Medlicottiidae Karpinsky 1889

Subfm. †Artioceratinae Leonova 1989

Subfm. †Episageceratinae Ruzhencev 1956

Subfm. †Medlicottiinae Karpinsky 1889

Subfm. †Miklukhoceratinae Leonova 1989

Subfm. †Propinacoceratinae Plummer and Scott 1937

Subfm. †Sicanitinae Noetling 1904

Subfm. †Uddenitinae Miller and Furnish 1940

Invalid names: Propinacoceratidae Plummer and Scott 1937 [synonym]

Fm. †Pronoritidae Frech 1901

Subfm. †Neopronoritinae Weyer 1972

Subfm. †Pronoritinae Frech 1901

G. †Uralopronorites Librovitch and Ruzhencev 1949

Fm. †Sundaitidae Ruzhencev 1957

G. †Sundaites Haniel 1915

Invalid names: Darvasiceratidae Leonova 1990 [empty], Shikhanitidae Ruzhencev 1951 [empty]

Superfm. †Prolecanitoidea Hyatt 1884

Fm. †Daraelitidae Tchernow 1907

G. †Boesites Miller and Furnish 1940

Subfm. †Dalaelitinae Tschernow 1907

G. †Daraelites Gemmellaro 1887

G. †Epicanites Schindewolf 1926

Subfm. †Epicanitinae Weyer 1965

G. †Praedaraelites Schindewolf 1934

Fm. †Prolecanitidae Hyatt 1884

G. †Dombarocanites Ruzhencev 1949

G. †Prolecanites Mojsisovics 1882

Invalid names: Rhipaeocanites Ruzhentsev 1949 [synonym]

Subfm. †Prolecanitinae Hyatt 1884

Subfm. †Protocanitinae Weyer 1972

Invalid names: Prolecanitina Miller and Furnish 1954 [empty], Sageceratina [empty]

Or. †Psiloceratida Housa 1965

G. †Odoghertyceras Guex et al. 1998

†Odoghertyceras deweveri Guex et al. 1998

Superfm. †Ptychoceratoidea Gill 1871

Fm. †Hamulinidae Gill 1871

G. †Amorina Vermeulen 2005

G. †Anahamulina Hyatt 1900

†Anahamulina picteti Eichwald 1868

†Anahamulina subcylindrica d'Orbigny 1850

†Anahamulina wilcoxensis Imlay 1960

G. †Hamulina d'Orbigny 1850

†Hamulina aldersona Anderson 1938

†Hamulina astieriana d'Orbigny 1850

Invalid names: Anahamulinidae Breistroffer 1952 [synonym]

Fm. †Macroscaphitidae Hyatt 1900

G. †Cicatrites

G. †Macroscaphites Meek 1876

Subg. †Macroscaphites (Costidiscus) Uhlig 1883

Subg. †Macroscaphites (Macroscaphites) Meek 1876

†Macroscaphites alpinus d'Orbigny 1850

†Macroscaphites perforatus Avram 1984

†Macroscaphites soaresi Da Silva 1962

†Macroscaphites striatisulcatus d'Orbigny 1841

†Macroscaphites yvani Puzos 1831

Fm. †Megacrioceratidae Vermeulen 2006

G. †Megacrioceras Delanoy et al. 1987

†Megacrioceras astierianum d'Orbigny 1850

†Megacrioceras doublieri Jaubert 1856

G. †Shasticrioceras Anderson 1938

†Shasticrioceras inflatum Anderson 1938

†Shasticrioceras patricki Murphy 1975

†Shasticrioceras poniente Anderson 1938

Invalid names: Shasticrioceras hesperum Anderson 1938 [synonym]

†Shasticrioceras roddai Murphy 1975

†Shasticrioceras whitneyi Anderson 1938

†Shasticrioceras wintunium Anderson 1938

Invalid names: Shasticrioceras hesperum nipponicum Matsumoto 1947 [synonym]

G. †Punctaptychus Trauth 1927 [ammonoid aptychus]

†Punctaptychus punctatus Voltz 1837 [ammonoid aptychus]

G. †Rhytidoceras Van Hoepen 1931

Invalid names: Diplasioceras [synonym]

G. †Rugaptychus Trauth 1927 [ammonoid aptychus]

†Rugaptychus rugosus Sharpe 1856 [ammonoid aptychus]

G. †Sidetes Giebel 1847 [Ammonoid aptychus]

Invalid names: Anaptychus Schlumberger 1868 [synonym]

G. †Spinaptychus Trauth 1927 [ammonoid aptychus]

†Spinaptychus spinosus Cox 1926 [ammonoid aptychus]

Or. †Tornoceratida Wedekind 1918

Subor. †Agathiceratina Leonova 2002

Invalid names: Agathicerataceae Arthaber 1911 [empty]

Invalid names: Pseudohaloritina Leonova 2002 [empty]

G. †Yokoyamaoceras Wright and Matsumoto 1954

Invalid names: Ammonites hercules d'Orbigny 1850 [nomen dubium], Ammonites ludovicus d'Orbigny 1850 [nomen dubium], Ellipsolithes de Montfort 1808 [invalid subgroup], Globites de Haan 1825 [invalid subgroup], Gomimonomeroceras Sobolew 1914 [invalid subgroup], Laevicornaptychus Trauth 1936 [nomen nudum], Lilinthiceras Diener 1903 [nomen nudum], Lytoceratida Hyatt 1899 [empty], Medlicottiida [empty], Orbulites Lamarck 1801 [invalid subgroup], Pelagus Montfort 1808 [invalid subgroup], Phyllocerida [empty], Planulites Lamarck 1801 [invalid subgroup], Praeglyphioceratida Ruzhencev 1957 [empty], Pronoritida Hyatt and Smith 1905 [empty], Proplanulitidae Buckman 1921 [empty], Tornocerida Wedekind 1918 [empty], Trachyceratina Krystyn 1978 [empty], Tropitoidea Mojsisovics 1875 [empty]

Fm. †Anomalosaepiidae Yancey and Garvie 2011

G. †Anomalosaepia Weaver and Ciampaglio 2003

†Anomalosaepia parmula Yancey and Garvie 2011

G. †Avramidiscus Vermeulen 1996

†Avramidiscus gastaldianus d'Orbigny 1850

Subcl. †Bactritoidea Shimanskiy 1951

Or. †Bactritida Shimanskiy 1951

Fm. †Bactritidae Hyatt 1884

G. †Bactritella Shimanskiy 1996

†Bactritella pamirica Shimanskiy 1996

G. †Bactrites Sandberger 1843

†Bactrites bolorensis Shimanskiy 1993

†Bactrites carbonarius Smith 1903

†Bactrites elcapitanensis Mapes 1979

†Bactrites gaitherensis Gordon 1964

†Bactrites gracile Blumenbach 1803

†Bactrites mexicanus Miller 1944

†Bactrites mirificus Shimanskiy 1993

†Bactrites pandanifoliolus Berry 1924

†Bactrites redactus Gordon 1964

†Bactrites sempiternus Shimanskiy 1954

†Bactrites smithianus Girty 1909

†Bactrites steinhaueri Sowerby 1814

†Bactrites subconicus Sandberger 1843

†Bactrites ultuganensis Shimanskiy 1954

G. †Chuvashovia Doguzhaeva 2002

†Chuvashovia curvata Doguzhaeva 2002

G. †Ctenobactrites Shimanskiy 1951

Subg. †Ctenobactrites (Ctenobactrites) Shimanskiy 1951

Subg. †Ctenobactrites (Mirites) Shimanskiy 1962

†Ctenobactrites costatus Shimanskiy 1951

†Ctenobactrites lesliensis Mapes 1979

†Ctenobactrites mirus Shimanskiy 1954

†Ctenobactrites obliquesulcatus Gemmellaro 1889

†Ctenobactrites shindensis Shimanskiy 1993

G. †Cyrtobactrites Erben 1960

G. †Devonobactrites Shimanskiy 1962

†Devonobactrites emsiense Kröger 2008

†Devonobactrites obliquiseptatum Sandberger and Sandberger 1852

G. †Dillerites Gordon 1966

†Dillerites shastensis Gordon 1966

G. †Hemibactrites Shimanskiy 1954

†Hemibactrites adrianense Gemmellaro 1889

†Hemibactrites ellipsoidalis Shimanskiy 1954

†Hemibactrites primus Shimanskiy 1954

G. †Linibactrites Doguzhaeva 2002

†Linibactrites solidus Doguzhaeva 2002

G. †Lobobactrites Schindewolf 1932

†Lobobactrites ellipticus Frech 1897

G. †Ovobactrites Doguzhaeva 2002

†Ovobactrites antonovae Doguzhaeva 2002

G. †Planibactrites Becker 1993

†Planibactrites trigoniferus Becker 1993

G. †Pseudobactrites Ferronniére 1921

G. †Sicilioceras Shimanskiy 1954

†Sicilioceras paternoi Gemmellaro 1889

G. †Simobactrites Doguzhaeva 2002

†Simobactrites kuzinae Doguzhaeva 2002

G. †Uralobactrites Doguzhaeva 2002

†Uralobactrites uralicus Doguzhaeva 2002

G. †Cochleiferoceras Shimanskiy 1962

G. †Cyclobactrites Shimanskiy 1955

Fm. †Parabactritidae Shimanskiy 1948

G. †Aktastioceras Shimanskiy 1948

†Aktastioceras kruglovi Shimanskiy 1948

†Aktastioceras mapesi Shimanskiy 1993

†Aktastioceras nishikawai Niko et al. 1993

G. †Belemnitomimus Shimanskiy 1954

†Belemnitomimus palaeozoicus Shimanskiy 1954

G. †Microbactrites Shimanskiy 1954

†Microbactrites parvus Shimanskiy 1954

†Microbactrites scorobogatovae Shimanskiy 1948

G. †Parabactrites Shimanskiy 1948

†Parabactrites ruzhencevi Shimanskiy 1948

G. †Tabantaloceras Shimanskiy 1954

†Tabantaloceras planum Shimanskiy 1954

Or. †Barrandeocerida Flower and Kummel, Jr. 1950

Fm. †Barrandeoceratidae Foerste 1925

G. †Antiplectoceras Foerste and Savage 1927

†Antiplectoceras askerense Strand 1934

G. †Aserioceras Stumbur 1962

†Aserioceras purtsensis Stumbur 1962

G. †Avilionella Flower 1952

G. †Barrandeoceras Hyatt 1884

†Barrandeoceras convolvans Hall 1847

†Barrandeoceras elrodi White 1882

†Barrandeoceras minganense Hyatt 1894

†Barrandeoceras natator Billings 1859

†Barrandeoceras sacheri Barrande 1865

†Barrandeoceras sternbergi Barrande 1865

†Barrandeoceras tyrranum Barrande 1865

G. †Bickmorites Foerste 1925

G. †Centrocyrtoceras Foerste 1933

†Centrocyrtoceras frognoyense Strand 1934

†Centrocyrtoceras mozolai Flower 1943

†Centrocyrtoceras subannulatum Dorbigny 1850

G. †Paquettoceras Foerste 1932

G. †Vasalemmoceras Stumbur 1962

†Vasalemmoceras tolerabile Stumbur 1962

Fm. †Barrandoceratidae Foerste 1925

G. †Gasconsoceras Foerste 1936

G. †Haydenoceras Flower 1949

G. †Laureloceras Flower 1949

G. †Savageoceras Foerste 1930

Fm. †Lechritrochoceratidae Flower 1950

G. †Catyrephoceras Foerste 1926

G. †Kosovoceras Turek 1975

†Kosovoceras exoptatum Turek 1975

†Kosovoceras modestum Barrande 1865

†Kosovoceras nodosum Barrande 1965

†Kosovoceras sandbergeri Barrande 1865

G. †Lechritrochoceras Foerste 1926

G. †Leurotrochoceras Foerste 1926

G. †Peismoceras Hyatt 1894

G. †Systrophoceras Hyatt 1894

G. †Trochodictyoceras Foerste 1926

Fm. †Nephriticeratidae Hyatt 1894

G. †Baeopleuroceras Williams 1935

G. †Endoplanoceras Flower 1938

G. †Heracloceras Teichert 1940

G. †Lyrioceras Foerste 1927

G. †Nephriticeras Hyatt 1884

G. †Nephriticerina Foerste 1927

G. †Rhadinoceras Hyatt 1894

G. †Sphyradoceras Hyatt 1884

G. †Triplooceras Hyatt 1884

Fm. †Plectoceratidae Hyatt in Zittel 1900

G. †Plectoceras Hyatt 1884

†Plectoceras carletonense Foerste 1933

†Plectoceras jason Billings 1859

G. †Belosaepia Voltz 1830

†Belosaepia alabamensis Palmer 1937

†Belosaepia alabamensis voltzii Palmer 1937

†Belosaepia harrisi Palmer 1937

†Belosaepia uncinata Palmer 1937

†Belosaepia ungula Yancey et al. 2010

G. †Burronoceras

Subcl. Coleoidea Bather 1888

Or. †Aulacocerida Stolley 1919 [belemnite]

Fm. †Aulacoceratidae von Mojsisovics 1882 [belemnite]

G. †Aulacoceras von Hauer 1847

†Aulacoceras carlottense Whiteaves 1889

†Aulacoceras inducens Braun 1841

†Aulacoceras sulcatum Hauer 1860

Invalid names: Belemnites otapiriensis Hector 1878 [nomen dubium]

G. †Buelowiteuthis Jeletzky 1966

G. †Dictyoconites von Mojsisovics 1902

Subg. †Dictyoconites (Dictyoconites) von Mojsisovics 1902

†Dictyoconites americanus Smith 1927

†Dictyoconites brancoi von Mojsisovics 1902

†Dictyoconites dieneri von Mojsisovics 1902

†Dictyoconites haueri Mojsisovics 1871

†Dictyoconites haugi von Mojsisovics 1902

†Dictyoconites lacicus von Mojsisovics 1902

†Dictyoconites quadrilineatus von Mojsisovics 1902

†Dictyoconites ruber De Toni 1913

†Dictyoconites seminudus von Mojsisovics 1902

†Dictyoconites suessi Mojsisovics 1871

†Dictyoconites taramellii Tommasi 1899

G. †Aussites

G. †Austroteuthis

G. †Breviatractites

G. †Crassiatractites

Fm. †Protoaulacoceratidae Bandel et al. 1983

G. †Protoaulacoceras Bandel et al. 1983

†Protoaulacoceras longirostris Bandel et al. 1983

Superor. †Belemnoida Gray 1849 [belemnite]

Or. †Donovaniconida Doguzhaeva et al. 2002

Fm. †Donovaniconidae Doguzhaeva et al. 2002

G. †Donovaniconus Doguzhaeva et al. 2002

G. †Saundersites Doguzhaeva et al. 2008

Fm. †Rhiphaeoteuthidae Doguzhaeva 2002

G. †Rhiphaeoteuthis Doguzhaeva 2002

Invalid names: Gordoniconidae Mapes et al. 2010 [empty]

Or. †Hematitida Doguzhaeva et al. 2002

Fm. †Hematitidae Gustomesov 1976

G. †Bactritimimus Flower and Gordon 1959

G. †Hematites Flower and Gordon 1959

G. †Paleoconus Flower and Gordon 1959

Superfm. †Belemnoidea Hyatt 1884 [belemnite]

Or. †Aulacoceratida Stolley 1919 [belemnite]

Fm. †Chitinoteuthididae Muller-Stoll 1936

G. †Chitinoteuthis

Fm. †Palaeobelemnopsidae Chen 1982 [belemnite]

G. †Palaeobelemnopsis Chen 1982

Fm. †Xiphoteuthididae Naef 1922 [belemnite]

G. †Atractites Guembel 1861

Invalid names: Ausseites Flower 1944 [synonym], Choanoteuthis Fischer 1951 [synonym], Xiphoteuthis Huxley 1864 [synonym]

G. †Calliconites

G. †Metabelemnites

Invalid names: Belemnococeras Popov 1964 [synonym]

G. †Zugmontites

Invalid names: Atractitidae Jeletzky 1965 [synonym]

Or. †Belemnitida Zittel 1895 [belemnite]

G. †Arcobelus

G. †Aulacoteuthis

†Aulacoteuthis wyntoonium Anderson 1938

G. †Bayanoteuthis

G. †Belemnella

G. †Belemnellocamax

Subor. †Belemnitina Zittel 1895 [belemnite]

Fm. †Belemnitidae d'Orbigny 1845

Fm. †Cylindroteuthididae Stolley 1919 [belemnite]

G. †Eocylindroteuthis Riegraf 1980

Fm. †Hastitidae Naef 1922 [belemnite]

Fm. †Megateuthididae Sachs and Nalnjaeva 1967

Fm. †Nipponoteuthidae Iba et al. 2014

Fm. †Passaloteuthididae Naef 1922 [belemnite]

Fm. †Salpingoteuthididae Doyle 1992 [belemnite]

Invalid names: Belemnoteuthidae Zittel 1885 [empty], Oxyteuthididae Stolley 1919 [empty]

G. †Belemnitina

G. †Belemnocamax

Subor. †Belemnopseina Jeletzky 1965 [belemnite]

Fm. †Belemnitellidae Pavlov 1914 [belemnite]

Fm. †Belemnopseidae Naef 1922

Fm. †Dicoelitidae Saks and Nal'nyaeva 1967 [belemnite]

Fm. †Dimitobelidae Whitehouse 1924 [belemnite]

Invalid names: Pseudodicoelitidae Saks and Nal'nyaeva 1967 [empty]

Subor. †Belemnotheutididina Stolley 1919 [belemnite]

Invalid names: Belemnotheutididae Zittel 1885 [empty]

Subor. †Belemnotheutina Stolley 1919 [belemnite]

Fm. †Belemnotheutidae Zittel 1884 [belemnite]

Fm. †Sueviteuthidae Reitner and Engeser 1980

G. †Belospirula

G. †Brachybelus

G. †Brevibelus

†Brevibelus breviformis Voltz 1830

G. †Coeloteuthis

G. †Conobelus Stolley 1919

†Conobelus pseudoheres Lukeneder 2005

G. †Eobelemnites Flower 1945

G. †Fusiteuthis

G. †Gastrobelus

G. †Gonioteuthis

G. †Holcobelus

†Holcobelus munieri Eudes-Deslongchamps 1878

G. †Homaloteuthis

G. †Lenobelus

G. †Mesoteuthis

G. †Neobelemnella

G. †Oxyteuthis

Subor. †Pachybelemnopseina Riegraf 1998

Fm. †Duvaliidae Pavlow 1914 [belemnite]

Fm. †Mesohibolitidae Nerodenko 1983

G. †Pachyduvalia

G. †Pachyteuthis Bayle 1878

†Pachyteuthis abbreviatus Miller 1826

†Pachyteuthis excentralis Young and Bird 1828

†Pachyteuthis souichii d'Orbigny 1843

†Pachyteuthis troslayana d'Orbigny 1850

G. †Parahastites

G. †Parahibolites

G. †Patagonibelus

G. †Peratobelus

†Peratobelus sellheimi Tenison Wood 1902

G. †Praeoxyteuthis

G. †Pseudodicoelites

G. †Raphibelus

G. †Rhopaloteuthis

†Rhopaloteuthis aenigmatica d'Orbigny 1843

†Rhopaloteuthis bzoviensis Zeuschner 1869

†Rhopaloteuthis sauvanausa d'Orbigny 1843

G. †Sachsibelus

G. †Simobelus

G. †Simpsonibelus

Fm. †Sinobelemnitidae Bian and Zhu 1984

G. †Sinobelemnites

G. †Tohokubelus Niko and Ehiro 2022

G. †Somalibelus

G. †Volgobelus

G. †Youngibelus

Invalid names: Auleracida [empty]

Superor. Decabrachia Boettger 1952

G. †Longibelus Fuchs et al. 2013

†Longibelus kabanovi Doguzhaeva 1996

†Longibelus matsumotoi Hirano 1991

Or. Myopsida d'Orbigny 1841

Fm. Loliginidae d'Orbigny 1841

G. Loligo Schneider 1784

Or. Sepiida Zittel 1895 [cuttlefish]

G. †Adygeya Dogushaeva 1996

G. †Amerirostra Jeletzky 1969

Fm. †Belosaepiidae Dixon 1850

G. †Aegyptosaepia Košťák et al. 2013

Fm. †Belosepiellidae Naef 1921

G. †Belosepiella Alessandri 1905

Fm. †Belosepiidae Dixon 1850

G. †Belosepia Bronn 1838

Invalid names: Stenosepia Vincent 1901 [synonym]

G. †Pseudosepia Naef 1923

G. †Notosepia Chapman 1915

†Notosepia cliftonensis Chapman 1915

Fm. Sepiidae Keferstein 1866 [cuttlefish]

Subfm. Sepiinae Keerstein 1866

Invalid names: Chondrophoridae Fischer [empty], Idiosepiidae Fischer 1887 [empty], Sepiadariidae Naef 1921 [empty], Sepiolidae Keferstein 1866 [empty]

Or. Spirulida Stolley 1919

Fm. †Belemnoseidae Wiltshire 1869

G. †Belemnosella Naef 1922

G. †Belemnosis Edwards 1849

G. †Spirulirostrella Naef 1921

Fm. †Belopteridae Naef 1922

G. †Belocurta Avnimelech 1956

G. †Beloptera de Blainville 1827

G. †Belopteridium Naef 1921

G. †Belopterina Munier-Chalmas 1872

Subfm. Belopterinae Naef 1922

Fm. †Groenlandibelidae Jeletzky 1966

G. †Cyrtobelus Fuchs et al. 2012

G. †Groenlandibelus Jeletzky 1966

G. †Naefia Wetzel 1930

Fm. Spirulidae Orbigny 1826

G. Spirula Lamarck 1799 [ram's horn shell]

Fm. †Spirulirostridae Naef 1921

G. †Spirulirostra d'Orbigny 1842

G. †Spirulirostridium Naef 1922

Invalid names: Belemnosinae Wiltshire 1869 [empty], Spirulirostrinae Naef 1921 [empty]

Fm. †Spirulirostrinidae Naef 1921

G. †Spirulirostrina Canavari 1892

Fm. †Vasseuriidae Naef 1921

G. †Styracoteuthis Crick 1905

G. †Vasseuria Munier-Chalmas 1880

Or. Teuthida Naef 1916 [squid]

G. Berryteuthis Naef 1923

G. Dosidicus Steenstrup 1857

Subor. †Glochinomorphina Gordon 1971

Invalid names: Glochinomorphidae Gordon 1971 [empty]

G. †Jeletzkyteuthis Doyle 1990

G. Moroteuthis

Subor. Myopsina d'Orbigny 1841

Invalid names: Pickfordiateuthidae Voss 1953 [empty]

Subor. Oegopsina d'Orbigny 1845

G. †Yezoteuthis Tanabe et al. 2006

Invalid names: Ancistrocheiridae Pfeffer 1912 [empty], Architeuthidae Pfeffer 1900 [empty], Bathyteuthidae Pfeffer 1912 [empty], Batoteuthidae Young and Roper 1968 [empty], Brachioteuthidae Pfeffer 1908 [empty], Chiroteuthidae Gray 1849 [empty], Chtenopterygidae Grimpe 1922 [empty], Cranchiidae Gray 1849 [empty], Cycloteuthidae Naef 1923 [empty], Enoploteuthidae Chun 1910 [empty], Gonatidae Hoyle 1886 [empty], Histioteuthidae Verril 1881 [empty], Jobiniteuthidae Naef 1922 [empty], Lepidoteuthidae Pfeffer 1912 [empty], Lycoteuthidae [empty], Magnapinnidae Vecchione and Young 1998 [empty], Mastigoteuthidae Verrill 1881 [empty], Neotheuthidae Naef 1921 [empty], Octopoteuthidae Berry 1912 [empty], Ommastrephidae Steenstrup 1857 [empty], Onychoteuthidae Gray 1849 [empty], Promachoteuthidae Naef 1912 [empty], Pyroteuthidae Pfeffer 1912 [empty], Thysanoteuthidae Kefferstein 1866 [empty], Walvisteuthidae Nlesis and Nikitina 1986 [empty]

G. †Romaniteuthis

G. Symplectoteuthis

G. †Triadoteuthis

†Triadoteuthis parvula Müller 1967

Invalid names: Sepiolida Fiorini 1981 [empty]

Superor. Decembrachiata Winckworth 1932

Subor. Teuthina Naef 1916

Fm. †Eoteuthoidae Košťák 2003

G. †Eoteuthoides Košťák 2002

Or. †Diplobelida Jeletzky 1965 [belemnite]

Fm. †Chondroteuthidae Jeletzky 1965

G. †Chondroteuthis Bode 1933 [belemnite]

†Chondroteuthis wunnenbergi Bode 1933

G. †Clarkeiteuthis Fuchs et al. 2013

†Clarkeiteuthis conocauda Quenstedt 1849

Invalid names: Odontobelus tripartitus Rietschel 1977 [synonym]

†Clarkeiteuthis montefiori Buckman 1880

Invalid names: Acanthoteuthis jaeckeli Naef 1922 [synonym]

Fm. †Diplobelidae Naef 1926

G. †Chalalabelus Jeletzky 1981

†Chalalabelus renniei Spath 1939

G. †Conoteuthis

†Belemnoteuthis (Conoteuthis) pacifica Anderson 1938

†Conoteuthis dupinianus d'Orbigny 1842

†Conoteuthis hayakawai Fuchs and Niko 2010

G. †Diplobelus

†Diplobelus belemnitoides Zittel 1868

G. †Pavloviteuthis

†Pavloviteuthis cantiana Spath 1939

†Pavloviteuthis kabanovi Shimansky 1957

G. †Quiricobelus

G. †Tauriconites

†Tauriconites nikolai Kabanov 1984

G. †Vectibelus Jeletzky 1981

†Vectibelus vectensis Spath 1939

G. †Glochinomorpha Gordon 1971

†Glochinomorpha stifeli Gordon 1971

G. †Jeletzkya Johnson and Richardson 1968

†Jeletzkya douglassae Johnson and Richardson 1968

Or. †Loligosepiida Jeletzky 1965

Fm. †Geopeltididae Regteren Altena 1949

G. †Geopeltis van Regteren Altena 1949

Invalid names: Geoteuthis Naef 1921 [replaced]

Invalid names: Geoteuthidae Naef 1921 [replaced]

Fm. †Leptoteuthididae Naef 1921

G. †Leptoteuthis

Fm. †Loligosepiidae Regteren Altena 1949

G. †Loliginites Quenstedt 1849

G. †Loligosepia Quenstedt 1839

†Loligosepia bucklandi Voltz 1840

Invalid names: Belopeltis acuminatus Voltz 1840 [synonym]

†Loligosepia neidernachensis Reitner 1978

Invalid names: Belopeltis Voltz 1840 [synonym], Geoteuthis Munster 1843 [synonym], Palaeosepia Theodori 1844 [synonym]

G. †Neololigosepia Reitner and Engeser 1982

†Neololigosepia stahleckeri Reitner and Engeser 1982

G. †Parabelopeltis Naef 1921

Invalid names: Belopeltidae Naef 1921 [replaced]

Fm. †Mastigophoridae Engeser and Reitner 1985

G. †Mastigophora Owen 1856

†Mastigophora stuehmeri Engeser and Reitner 1985

G. †Simoniteuthis Fuchs et al. 2024

†Simoniteuthis michaelyi Fuchs et al. 2024

Invalid names: Necroteuthididae Kretzoi 1942 [empty]

Unr. †Neocoleoidea

G. †Mojsisovicsteuthis Jeletzky 1966

†Mojsisovicsteuthis boeckhi Stuerzenbaum 1876

†Mojsisovicsteuthis convergens Hauer 1847

†Mojsisovicsteuthis ellipticus Mojsisovics 1871

Or. †Phragmoteuthida Jeletzky 1965 [belemnite]

G. †Breviconoteuthis Rieber 1973

†Breviconoteuthis breviconus Reis 1907

Fm. †Phragmoteuthididae von Mojsisovics 1882

G. †Permoteuthis Rosenkrantz 1946

G. †Phragmoteuthis von Mojsisovics 1882

Superor. Vampyropoda von Boletzky 1992

G. †Gordoniconus Mapes et al. 2010

†Gordoniconus beargulchensis Mapes et al. 2010

Invalid names: Syllipsimopodi bideni Whalen and Landman 2022 [synonym]

†Gordoniconus hewitti Mapes et al. 2010

Invalid names: Syllipsimopodi Whalen and Landman 2022 [synonym]

Or. Octobrachia Fiorini 1981

Or. Cirroctopodida Young 1989

Or. Octopoda Leach 1818 [octopus]

Subor. †Prototeuthina Naef 1921

Or. Vampyromorphida Robson 1929 [vampire squids]

G. Onychoteuthis Lichtenstein 1818

Superor. †Palaeoteuthomorpha Bandel et al. 1983

Or. †Boletzkyida Bandel et al. 1983

Fm. †Boletzkyidae Bandel et al. 1983

G. †Boletzkya Bandel et al. 1983

Fm. †Naefiteuthididae Bandel et al. 1983

G. †Naefiteuthis Bandel et al. 1983

G. †Pohlsepia Kluessendorf and Doyle 2003

†Pohlsepia mazonensis Kluessendorf and Doyle 2003

Or. †Teuthidea Naef 1916

Invalid names: Mesoteuthina Naef 1921 [empty]

G. †Ticinoteuthis Pohle and Klug 2024

†Ticinoteuthis chuchichaeschtli Pohle and Klug 2024

Invalid names: Belemnomorpha Reitner and Engeser 1982 [empty], Dibranchiata Owen 1836 [synonym], Phragmoteuthidida Jeletzky 1965 [empty]

G. †Dartoceras Foerste 1936

G. †Davidiceras Vermeulen 2003

G. †Desmoceras

G. †Didymoceras Lai and Xu 1987

Or. †Ellesmerocerida Flower and Kummel, Jr. 1950

Fm. †Acaroceratidae Chen et al. 1979

G. †Acaroceras Chen et al. 1979

†Acaroceras endogastrum Chen et al. 1979

†Acaroceras jianghsanense Chen and Qi 1981

G. †Weishanhuceras

G. †Antacaroceras

Fm. †Balkoceratidae Flower 1964

G. †Balkoceras

†Balkoceras gracile Flower 1964

G. †Bambusoceras

Fm. †Bathmoceratidae Gill 1871

G. †Bathmoceras Barrande 1865

†Bathmoceras australe Teichert 1939

†Bathmoceras complexum Barrande 1856

†Bathmoceras llanvirnense Roberts 1884

†Bathmoceras norvegicum Sweet 1958

†Bathmoceras taichoutense Kröger and Lefebvre 2012

G. †Eothinoceras Ulrich et al. 1944

G. †Cyptendocerina Ulrich et al. 1944

Fm. †Ellesmeroceratidae Kobayashi 1934

G. †Albertoceras Ulrich and Foerste 1936

†Albertoceras gracillimum Ulrich et al. 1944

†Albertoceras minimum Ulrich et al. 1944

†Albertoceras staufferi Ulrich et al. 1944

†Albertoceras walcotti Ulrich and Foerste 1936

G. †Anhuiceras

G. †Annoceras Flower 1964

†Annoceras costatum Flower 1964

Invalid names: Annoceras elevatum Flower 1964 [synonym], Annoceras perobliquum Foerste 1964 [synonym], Ellesmeroceras angulatum Flower 1964 [synonym], Ellesmeroceras fusiforme Flower 1964 [synonym], Ellesmeroceras imbricatum Flower 1964 [synonym], Ellesmeroceras progressum Flower 1964 [synonym], Eremoceras magnum Flower 1964 [synonym], Eremoceras perseptatum Flower 1964 [synonym]

†Annoceras multicameratum Flower 1964

†Annoceras vernonense Ulrich et al. 1943

G. †Barnesoceras Flower 1964

†Barnesoceras clavatum Flower 1964

†Barnesoceras conosiphonatum Flower 1964

†Barnesoceras expansum Flower 1964

†Barnesoceras lamellosum Flower 1964

†Barnesoceras lentiexpansum Flower 1964

†Barnesoceras percurvatum Flower 1964

†Barnesoceras transversum Flower 1964

G. †Bassleroceras Ulrich and Foerste 1936

†Bassleroceras acinacellum Whitfield 1886

†Bassleroceras alethes Billings 1865

†Bassleroceras beekmanense Whitfield 1889

†Bassleroceras bridgei Ulrich et al. 1944

†Bassleroceras champlainense Kröger and Landing 2008

†Bassleroceras dalevillense Ulrich et al. 1944

†Bassleroceras kayi Ulrich et al. 1944

†Bassleroceras kirbyi Whitfield 1889

†Bassleroceras lasallense Ulrich et al. 1944

†Bassleroceras microscopium Dwight 1884

†Bassleroceras perseus Billings 1865

†Bassleroceras smithbasinense Kröger and Landing 2008

†Bassleroceras spissiseptum Dwight 1884

†Bassleroceras tenuiculum Ulrich et al. 1944

†Bassleroceras triangulum Kröger and Landing 2008

†Bassleroceras vassarina Dwight 1884

G. †Boreoceras Miller and Youngquist 1947

†Boreoceras brevicameratum Miller and Youngquist 1947

†Boreoceras cloudi Miller and Youngquist 1947

†Boreoceras ovale Flower 1964

†Boreoceras parvulum Miller and Youngquist 1947

†Boreoceras washburni Miller and Youngquist 1947

G. †Botellusoceras Kröger and Mutvei 2005

†Botellusoceras torpense Kröger and Mutvei 2005

G. †Bridgeoceras Ulrich et al. 1943

†Bridgeoceras subannulatum Ulrich et al. 1943

G. †Buehleroceras Ulrich et al. 1943

†Buehleroceras apertum Ulrich et al. 1943

†Buehleroceras compressum Ulrich et al. 1943

G. †Burenoceras Ulrich and Foerste 1931

†Burenoceras angulare Ulrich et al. 1943

†Burenoceras compressum Ulrich et al. 1943

†Burenoceras cornucopia Flower 1964

†Burenoceras cornucopiaforme Powell 1935

†Burenoceras curticei Ulrich et al. 1943

†Burenoceras dickhauti Ulrich et al. 1943

†Burenoceras dilatatum Ulrich et al. 1943

†Burenoceras expandum Ulrich and Foerste 1931

†Burenoceras huzzahense Ulrich et al. 1943

†Burenoceras minor Ulrich et al. 1943

†Burenoceras muricoides Flower 1964

†Burenoceras oneotense Ulrich et al. 1943

†Burenoceras peramplum Ulrich et al. 1943

†Burenoceras percompressum Ulrich et al. 1943

†Burenoceras phragmoceroides Flower 1964

†Burenoceras planiseptatum Ulrich et al. 1943

†Burenoceras pumilum Ulrich et al. 1943

†Burenoceras texanum Ulrich et al. 1943

†Burenoceras undosum Ulrich et al. 1943

†Burenoceras ungulatum Ulrich et al. 1943

G. †Caseoceras Ulrich et al. 1943

†Caseoceras conicum Ulrich et al. 1943

†Caseoceras contractum Ulrich et al. 1943

†Caseoceras holtedahli Foerste 1921

†Caseoceras intermedium Ulrich et al. 1943

†Caseoceras nitidum Ulrich et al. 1943

†Caseoceras obesum Flower 1964

†Caseoceras sequatchiense Ulrich et al. 1943

†Caseoceras subconicum Ulrich et al. 1943

G. †Chabactoceras

G. †Chepuloceras Unklesbay and Young 1956

†Chepuloceras inelegans Unklesbay and Young 1956

G. †Clarkoceras Ruedemann 1905

†Clarkoceras affine Ulrich et al. 1943

†Clarkoceras arcuatum Ulrich et al. 1943

†Clarkoceras buttsi Ulrich et al. 1943

†Clarkoceras calvini Ulrich et al. 1943

†Clarkoceras cinctum Ulrich et al. 1943

†Clarkoceras clelandi Ulrich et al. 1943

†Clarkoceras confertum Ulrich et al. 1943

†Clarkoceras corniculum Sardeson 1896

†Clarkoceras crassum Ulrich et al. 1943

†Clarkoceras cuneatum Ulrich et al. 1943

†Clarkoceras curvatum Ulrich et al. 1943

†Clarkoceras expansum Ulrich et al. 1943

†Clarkoceras gracile Ulrich et al. 1943

†Clarkoceras huzzahense Ulrich et al. 1943

†Clarkoceras inconstans Ulrich et al. 1943

†Clarkoceras jasperense Ulrich et al. 1943

†Clarkoceras lawrencense Ulrich et al. 1943

†Clarkoceras levisense Ulrich et al. 1943

†Clarkoceras luthei Ulrich et al. 1943

†Clarkoceras luthei Calvin 1892

†Clarkoceras magnisiphonatum Ulrich et al. 1943

†Clarkoceras minneiskense Ulrich et al. 1943

†Clarkoceras modestum Ulrich et al. 1943

†Clarkoceras mohawkense Ulrich et al. 1943

†Clarkoceras multicameratum Ulrich et al. 1943

†Clarkoceras newtonwinchelli Clarke 1897

Invalid names: Clarkoceras claytonense Powell 1935 [synonym]

†Clarkoceras parvisiphonatum Ulrich et al. 1943

†Clarkoceras rectum Ulrich et al. 1943

†Clarkoceras ruedemanni Flower 1964

†Clarkoceras ruguliferum Ulrich et al. 1943

†Clarkoceras subarcuatum Ulrich et al. 1943

†Clarkoceras subcrassum Ulrich et al. 1943

†Clarkoceras subrectum Ulrich et al. 1943

†Clarkoceras vicinum Ulrich et al. 1943

†Clarkoceras whitehallense Ulrich et al. 1943

G. †Clelandoceras Ulrich et al. 1944

†Clelandoceras elongatum Ulrich et al. 1944

†Clelandoceras rarum Flower 1964

G. †Conocerina Ulrich and Foerste 1936

†Conocerina arrecta Ulrich et al. 1943

†Conocerina bassleri Ulrich et al. 1943

†Conocerina beani Ulrich et al. 1943

†Conocerina brevis Ulrich and Foerste 1936

†Conocerina magna Ulrich et al. 1943

†Conocerina missouriensis Ulrich et al. 1943

†Conocerina obliqua Ulrich et al. 1943

†Conocerina raaschi Ulrich et al. 1943

†Conocerina sublonga Ulrich et al. 1943

†Conocerina unguloides Flower 1964

G. †Copiceras Ulrich et al. 1944

†Copiceras erectum Ulrich et al. 1944

G. †Cumberloceras Ulrich et al. 1943

†Cumberloceras buttsi Ulrich et al. 1943

†Cumberloceras elwayense Ulrich et al. 1943

G. †Dakeoceras Ulrich and Foerste 1931

†Dakeoceras champlainense Kröger and Landing 2007

†Dakeoceras corniculum Ulrich et al. 1943

†Dakeoceras dilatatum Ulrich et al. 1943

†Dakeoceras divergens Ulrich et al. 1943

†Dakeoceras gracilis Flower 1964

†Dakeoceras harrisi Flower 1964

†Dakeoceras magnisiphonatum Ulrich et al. 1943

†Dakeoceras mutabile Flower 1964

†Dakeoceras normale Ulrich and Foerste 1931

†Dakeoceras perretrorsum Ulrich et al. 1943

†Dakeoceras retrorsum Ulrich et al. 1943

†Dakeoceras reversum Ulrich et al. 1943

†Dakeoceras subcurvatum Ulrich and Foerste 1931

†Dakeoceras undulatum Ulrich et al. 1943

G. †Diaphoroceras Ulrich et al. 1944

†Diaphoroceras avaense Ulrich et al. 1944

†Diaphoroceras belli Ulrich et al. 1944

†Diaphoroceras buffaloense Ulrich et al. 1944

G. †Dongshanoceras

G. †Dyscritoceras Ulrich and Foerste 1936

†Dyscritoceras dictys Billings 1865

†Dyscritoceras jeffersonensis Cullison 1944

†Dyscritoceras metellus Billings 1865

†Dyscritoceras oxfordense Ulrich et al. 1944

G. †Ectenoceras Ulrich and Foerste 1936

†Ectenoceras arbucklense Ulrich et al. 1943

†Ectenoceras arcuosutum Ulrich et al. 1943

†Ectenoceras chepultepecense Ulrich et al. 1943

†Ectenoceras compressum Ulrich et al. 1943

†Ectenoceras curvatum Kobayashi 1931

†Ectenoceras ellipticum Ulrich et al. 1943

†Ectenoceras exile Ulrich et al. 1943

†Ectenoceras gracile Cleland 1903

†Ectenoceras higdonense Ulrich et al. 1943

†Ectenoceras laqueatum Ulrich et al. 1943

†Ectenoceras longum Ulrich et al. 1943

†Ectenoceras millsi Ulrich et al. 1943

†Ectenoceras obliquum Ulrich et al. 1943

†Ectenoceras pergracile Ulrich et al. 1943

†Ectenoceras perobliquum Ulrich et al. 1943

†Ectenoceras ruedemanni Kobayashi 1933

†Ectenoceras subcurvatum Ulrich et al. 1943

†Ectenoceras subcurvatum Kobayashi 1933

†Ectenoceras subgracile Ulrich and Foerste 1936

G. †Ectenolites Ulrich and Foerste 1935

†Ectenolites clelandi Ulrich et al. 1944

Invalid names: Bassleroceras clelandi Ulrich et al. 1944 [synonym], Ectenolites penecilin Flower 1964 [synonym]

†Ectenolites extensus Flower 1964

†Ectenolites primus Flower 1964

†Ectenolites sinuatus Flower 1964

Invalid names: Ectenolites simplex Flower 1964 [synonym]

†Ectenolites subgracilis Ulrich and Foerste 1935

G. †Ellesmeroceras Foerste 1921

†Ellesmeroceras bridgei Flower 1941

†Ellesmeroceras elongatum Kobayashi 1931

†Ellesmeroceras expansum Flower 1941

†Ellesmeroceras higdonense Ulrich et al. 1944

†Ellesmeroceras hotchkissi Ulrich et al. 1944

†Ellesmeroceras indomitum Kröger and Landing 2007

†Ellesmeroceras luthei Ulrich et al. 1944

†Ellesmeroceras scheii Foerste 1921

†Ellesmeroceras thomasi Ulrich et al. 1944

†Ellesmeroceras winonicum Sardeson 1896

Invalid names: Ellesmeroceras (Metaellesmeroceras) Flower 1956 [invalid subgroup]

G. †Eoclarkoceras

G. †Eoectenolites

G. †Eorudolfoceras Kröger and Landing 2007

†Eorudolfoceras antiquum Flower 1964

†Rudolfoceras praenuntium Flower 1964

G. †Eremoceras Hyatt 1884

†Eremoceras conoidale Ulrich et al. 1943

†Eremoceras difficile Ulrich et al. 1943

†Eremoceras gasconadense Ulrich et al. 1943

†Eremoceras luthei Ulrich et al. 1943

†Eremoceras marylandicum Ulrich et al. 1943

†Eremoceras perdilatum Ulrich et al. 1943

†Eremoceras subrectum Ulrich et al. 1943

†Eremoceras syphax Billings 1865

†Eremoceras teres Ulrich et al. 1943

†Eremoceras vernonense Ulrich et al. 1943

G. †Hemichoanella Teichert and Glenister 1954

G. †Keraiaceras

G. †Lebetoceras Teichert and Glenister 1954

G. †Levisoceras Foerste 1925

†Levisoceras arctedorsatum Ulrich et al. 1943

†Levisoceras belli Ulrich et al. 1943

†Levisoceras complanatum Ulrich et al. 1943

†Levisoceras constrictum Ulrich et al. 1943

†Levisoceras contractum Flower 1964

†Levisoceras curvatum Ulrich et al. 1943

†Levisoceras edwardsi Ulrich et al. 1943

†Levisoceras ellipticum Ulrich et al. 1943

†Levisoceras instabile Ulrich et al. 1943

†Levisoceras mercurius Billings 1865

†Levisoceras obliquatum Ulrich et al. 1943

†Levisoceras percurvatum Ulrich et al. 1943

†Levisoceras raaschi Ulrich et al. 1943

†Levisoceras subgracile Ulrich et al. 1943

†Levisoceras transitum Ulrich et al. 1943

G. †Llanoceras Flower 1964

†Llanoceras gracile Flower 1964

G. †Loxochoanella Teichert and Glenister 1954

G. †Meikeloceras

G. †Muriceras Flower 1964

†Muriceras anomalum Flower 1964

†Muriceras curviseptatum Flower 1964

†Muriceras gracile Flower 1964

†Muriceras hebetum Flower 1964

†Muriceras micromurus Flower 1964

†Muriceras moderatum Flower 1964

†Muriceras murus Flower 1964

†Muriceras obscurum Flower 1964

G. †Oelandoceras Foerste 1932

†Oelandoceras haelluddenense Foerste 1932

G. †Oneotoceras Ulrich 1926

†Oneotoceras curvatum Ulrich et al. 1943

†Oneotoceras divaricatum Ulrich et al. 1943

†Oneotoceras extremum Ulrich et al. 1943

†Oneotoceras husseyi Ulrich et al. 1943

†Oneotoceras impressum Ulrich et al. 1943

†Oneotoceras loculosum Hall 1861

†Oneotoceras madisonense Ulrich et al. 1943

†Oneotoceras magnum Ulrich et al. 1943

†Oneotoceras percurvatum Ulrich et al. 1943

†Oneotoceras wisconsinense Ulrich et al. 1943

G. †Pachendoceras Ulrich and Foerste 1936

†Pachendoceras brevicameratum Unklesbay and Young 1956

†Pachendoceras confertum Ulrich et al. 1944

†Pachendoceras parvum Unklesbay and Young 1956

G. †Paradakeoceras

G. †Purmanarcoceras

G. †Quebecoceras Foerste 1925

G. †Robsonoceras Ulrich and Foerste 1933

†Robsonoceras manitouense Ulrich et al. 1944

†Robsonoceras robsonense Walcott 1924

G. †Shantungendoceras Sun 1937

G. †Sinolebetoceras

G. †Smithvilloceras Ulrich et al. 1943

†Smithvilloceras thompsoni Ulrich et al. 1943

G. †Stemtonoceras Ulrich and Foerste 1936

†Stemtonoceras elongatum Ulrich and Foerste 1936

G. †Tanycameroceras

G. †Ventroloboceras Teichert and Glenister 1954

G. †Walcottoceras Ulrich and Foerste 1936

†Walcottoceras monsense Walcott 1924

†Walcottoceras obliquum Ulrich et al. 1944

G. †Woosteroceras Ulrich et al. 1944

†Woosteroceras chepultepecense Unklesbay and Young 1956

†Woosteroceras cherokeense Ulrich et al. 1944

†Woosteroceras flexiseptatum Flower 1964

†Woosteroceras percurvatum Flower 1964

†Woosteroceras spirale Flower 1964

†Woosteroceras trempealeauense Ulrich et al. 1944

Invalid names: Oneoceratidae Dzik 1984 [invalid subgroup], Wolungoceras valcourense Flower 1964 [nomen dubium]

G. †Eocyckistomiceras

Fm. †Eothinoceratidae Ulrich et al. 1944

G. †Conothinoceras Chen and Teichert 1987

G. †Desioceras Cecioni 1953

G. †Margaritoceras Cecioni and Flower 1985

G. †Protothinoceras Chen and Teichert 1987

G. †Sacerdosoceras Evans 2005

†Sacerdosoceras promus Evans 2005

G. †Saloceras Evans 2005

†Saloceras chinianense Thoral 1935

†Saloceras murvielense Kröger and Evans 2011

†Saloceras pradense Thoral 1935

†Saloceras sericeum Salter 1865

Fm. †Huaiheceratidae Zou and Chen 1979

G. †Huaiheceras Zou and Chen 1979

†Huaiheceras hanjiaense Zou and Chen 1979

G. †Huiaihecerina

G. †Zhuibianoceras Chen and Qi 1981

†Zhuibianoceras conicum Chen and Qi 1981

G. †Hunyuenoceras

G. †Parapalaeoceras

Fm. †Phthanoncoceratidae Evans and King 1990

G. †Phthanoncoceras Evans and King 1990

†Phtanoncoceras oelandense Evans and King 1990

†Phthanoncoceras ellipticum Lossen 1860

G. †Valhalloceras Evans and King 1990

†Valhalloceras floweri Evans and King 1990

Fm. †Plectronoceratidae Kobayashi 1935

G. †Eburoceras Zou and Chen 1979

Invalid names: Paraplectronoceras Qi and Chen 1979 [synonym], Pseudendoceras Chen and Zou 1979 [synonym]

G. †Eodiaphragmoceras

G. †Jiagouceras

G. †Lunanoceras Chen and Teichert 1983

G. †Multicameroceras Kobayashi 1933

G. †Palaeoceras Flower 1954

†Palaeoceras mutabile Flower 1954

†Palaeoceras undulatum Flower 1964

G. †Plectronoceras Ulrich and Foerste 1933

†Plectronoceras cambria Walcott 1905

†Plectronoceras exile Flower 1964

†Plectronoceras liaotungense Kobayashi 1935

G. †Rectseptoceras

G. †Ruthenoceras Korde 1954

Fm. †Protocycloceratidae Kobayashi 1935

G. †Bakeroceras Hook and Flower 1977

†Bakeroceras wahwahense Hook and Flower 1977

G. †Catoraphiceras Ulrich and Foerste 1936

†Catoraphiceras colon White 1874

†Catoraphiceras cushingi Ulrich et al. 1944

†Catoraphiceras foerstei Butts 1926

†Catoraphiceras ibexense Hook and Flower 1977

†Catoraphiceras lobatum Ulrich and Foerste 1936

†Catoraphiceras osagense Ulrich et al. 1944

†Catoraphiceras resseri Ulrich et al. 1944

†Catoraphiceras sordidum Billings 1859

G. †Catoraphinoceras Ulrich and Foerste 1936

G. †Cyptendoceras Ulrich and Foerste 1936

†Cyptendoceras floridaense Flower 1964

†Cyptendoceras kirki Flower 1964

†Cyptendoceras magnus Cullison 1944

†Cyptendoceras rhythmicum Flower 1964

†Cyptendoceras richardsoni Flower 1964

†Cyptendoceras ruedemanni Ulrich and Foerste 1936

Invalid names: Cyptendoceras whitfieldi Ulrich et al. 1944 [nomen dubium]

G. †Diastoloceras Teichert and Glenister 1954

G. †Endocycloceras Ulrich et al. 1944

†Endocycloceras gracile Flower 1964

†Endocycloceras legorense Ulrich et al. 1944

†Endocycloceras perannulatum Ulrich et al. 1944

†Endocycloceras subcurvatum Ulrich et al. 1944

†Endocycloceras wilsonae Ulrich et al. 1944

G. †Kyminoceras Teichert and Glenister 1954

†Kyminoceras kottlowskii Hook and Flower 1977

G. †Notocycloceras Teichert and Glenister 1954

G. †Protocycloceras Hyatt 1900

†Protocycloceras abnorme Ulrich et al. 1944

†Protocycloceras arkansasense Ulrich et al. 1944

†Protocycloceras catulus Billings 1865

†Protocycloceras debilis Clark 1935

†Protocycloceras doniphonense Ulrich et al. 1944

†Protocycloceras furtivum Billings 1865

†Protocycloceras gangshanense Zou 1988

†Protocycloceras geronticum Ulrich et al. 1944

†Protocycloceras lamarcki Billings 1859

Invalid names: Protocycloceras becki Billings 1859 [synonym], Protocycloceras whitfieldi Ruedemann 1906 [synonym], Rhabdocycloceras floweri Zhuravleva 1994 [synonym]

†Protocycloceras landmarcki Billings 1859

†Protocycloceras levisense Ulrich et al. 1944

†Protocycloceras manitouense Ulrich et al. 1944

†Protocycloceras mendax Billings 1859

†Protocycloceras odenvillense Ulrich et al. 1944

†Protocycloceras ordinatum Billings 1865

†Protocycloceras philipsburgense Ulrich et al. 1944

†Protocycloceras rushense McChesney 1859

†Protocycloceras smithvillense Ulrich et al. 1944

†Protocycloceras xerxes Billings 1865

Invalid names: Rhabdocycloceras Zhuravleva 1994 [synonym]

Invalid names: Rhabdocycloceratidae Zhuravleva 1994 [synonym]

G. †Qiushougouceras

Fm. †Rioceratidae Kröger and Evans 2011

G. †Felinoceras Kröger and Evans 2011

†Felinoceras constrictum Kröger and Evans 2011

G. †Rioceras Flower 1964

†Rioceras consuetum Sardeson 1896

†Rioceras dartoni Flower 1964

†Rioceras depressum Flower 1964

†Rioceras escandei Thoral 1935

†Rioceras expansum Flower 1964

†Rioceras fusiforme Flower 1964

†Rioceras lobatum Flower 1964

†Rioceras nondescriptum Flower 1964

†Rioceras tubulare Flower 1964

†Rioceras wellsi Flower 1964

Fm. †Rudolfoceratidae Ulrich et al. 1944

G. †Ectocycloceras Ulrich and Foerste 1936

†Ectocycloceras cataline Billings 1865

†Ectocycloceras cato Billings 1865

†Ectocycloceras levisense Ulrich et al. 1944

G. †Rudolfoceras Ulrich et al. 1944

†Rudolfoceras autolycus Billings 1862

†Rudolfoceras cornuoryx Whitfield 1886

†Rudolfoceras keadyi Hook and Flower 1977

†Rudolfoceras kindlei Ulrich et al. 1944

†Rudolfoceras russelli Hook and Flower 1977

†Rudolfoceras subarcuatum Ulrich et al. 1944

Fm. †Shideleroceratidae Flower 1946

G. †Shideleroceras Flower and Foerste 1946

G. †Theskeloceras

G. †Vassaroceras Ulrich et al. 1944

†Vassaroceras henrietta Dwight 1884

G. †Xiaoshaoceras

Invalid names: Cyrtocerinina Flower 1964 [empty], Ellesmeroceratina Flower 1950 [empty], Plectronoceratina Flower 1964 [empty]

Subcl. †Endoceratoidea Teichert 1933

Or. †Bisonocerida Evans and King 2012

Fm. †Allotrioceratidae Flower 1955

G. †Allotrioceras Flower 1955

†Allotrioceras bifurcatum Flower 1955

G. †Cacheoceras Flower 1968

†Cacheoceras trifidum Flower 1968

G. †Mirabiloceras Flower 1955

†Mirabiloceras multitubulatum Flower 1955

G. †Williamsoceras Flower 1964

†Williamsoceras adnatum Flower 1964

Fm. †Bisonoceratidae Evans and King 2012

G. †Bisonoceras Flower 1964

†Bisonoceras corniforme Flower 1964

†Bisonoceras hornei Ulrich et al. 1943

G. †Disphenoceras Flower 1964

†Disphenoceras conicum Flower 1964

G. †Parapiloceras Obata 1939

Fm. †Chihlioceratidae Grabau 1922

G. †Chihlioceras Grabau 1922

Fm. †Coreanoceratidae Chen 1976

G. †Coreanoceras Kobayashi 1931

Fm. †Emmonsoceratidae Flower 1958

G. †Emmonsoceras Flower 1958

Invalid names: Hudsonoceras Flower 1955 [replaced]

G. †Juaboceras Flower 1968

†Juaboceras brathwaitei Flower 1968

G. †Tallinnoceras Balashov 1960

Fm. †Humeoceratidae Teichert et al. 1964

G. †Humeoceras Foerste 1925

Fm. †Manchuroceratidae Kobayashi 1935

G. †Chaohuceras Qi 1980

G. †Manchuroceras Ozaki 1927

†Manchuroceras lemonei Hook and Flower 1977

†Manchuroceras nakamense Stait and Burrett 1984

Invalid names: Grabauoceras Shimizu and Obata 1936 [synonym]

Fm. †Padunoceratidae Balashov 1960

G. †Padunoceras Balashov 1960

G. †Rossoceras Flower 1964

†Rossoceras lamelliferum Flower 1964

Fm. †Piloceratidae Miller 1889

G. †Allopiloceras Ulrich and Foerste 1936

†Allopiloceras affine Ulrich et al. 1943

†Allopiloceras baylorense Ulrich et al. 1943

†Allopiloceras bealachense Evans 2011

†Allopiloceras breve Ulrich et al. 1943

†Allopiloceras canadense Billings 1860

†Allopiloceras coarctum Foerste 1938

†Allopiloceras compressum Ulrich et al. 1943

†Allopiloceras erectum Ulrich et al. 1943

†Allopiloceras lonachonense Evans 2011

†Allopiloceras sevierense Ulrich et al. 1943

†Allopiloceras subrectum Ulrich et al. 1943

†Allopiloceras subunguliforme Ulrich et al. 1943

†Allopiloceras tennesseense Ulrich and Foerste 1936

†Allopiloceras unguliforme Ulrich et al. 1943

G. †Augeoceras Evans 2011

†Augeoceras gracile Evans 2011

G. †Cassinoceras Ulrich and Foerste 1936

†Cassinoceras amplum Dawson 1881

†Cassinoceras magister Foerste 1938

†Cassinoceras triton Billings 1865

†Cassinoceras wortheni Billings 1865

G. †Dartonoceras Flower 1964

†Dartonoceras gracile Flower 1964

G. †Expandocassinoceras Evans 2011

†Expandocassinoceras arkansasense Ulrich et al. 1943

†Expandocassinoceras grande Ulrich and Foerste 1943

G. †Liaotungoceras Shimizu and Obata 1936

†Liaotungoceras manchuriense Endo 1932

G. †Penhsioceras Endo 1932

G. †Piloceras Salter 1859

†Piloceras acinaces Ulrich and Foerste 1938

†Piloceras gracile Billings 1865

†Piloceras invaginatum Salter in Murchison 1859

†Piloceras saffordi Ulrich et al. 1943

G. †Subpenhsioceras Shimizu and Obata 1936

G. †Utoceras Ulrich et al. 1943

†Utoceras coloradense Ulrich et al. 1943

†Utoceras gleneyriense Ulrich et al. 1943

Fm. †Proterovaginoceratidae Evans and King 2012

G. †Chazyoceras Flower 1958

†Chazyoceras valcourense Flower 1958

G. †Perkinsoceras Flower 1976

†Perkinsoceras foerstei Flower 1976

†Perkinsoceras inflatum Flower 1976

G. †Proterovaginoceras Ruedemann 1905

†Proterovaginoceras belemnitiforme Holm 1885

†Proterovaginoceras incognitum Schröder 1882

Invalid names: Dideroceras amplum Balashov 1968 [synonym], Dideroceras brevispiculum Balashov 1968 [synonym], Dideroceras longispicum Balashov 1968 [synonym], Dideroceras pribalticum Balashov 1968 [synonym], Orthoceras duplex Wahlenberg 1821 [synonym], Schmidtoceras estonicum Balashov 1968 [synonym], Schmidtoceras kundense Balashov 1968 [synonym], Vaginoceras endoseptum Chang 1957 [synonym]

Invalid names: Schmidtoceras Balashov 1968 [synonym]

Invalid names: Sinoendoceratidae Lai 1985 [empty]

G. †Colpoceras Hall 1850

G. †Conoceras Bronn 1837

G. †Diploceras Conrad 1842

Or. †Endocerida Hyatt in Zittel 1900

Fm. †Botryceratidae Flower 1968

G. †Botryceras

G. †Choreanoceroides

Fm. †Cyrtendoceratidae Hyatt 1900

G. †Cyclocyrtendoceras Balashov 1961

G. †Cyrtendoceras Remelé 1886

†Cyrtendoceras remelei Foerste 1932

G. †Cyrtovaginoceras Kobayashi 1934

Fm. †Endoceratidae Hyatt 1884

G. †Allocotoceras Teichert and Glenister 1953

G. †Anthoceras Teichert and Glenister 1954

†Anthoceras arrowsmithense Stait and Laurie 1985

†Anthoceras warburtoni Teichert and Glenister 1954

Invalid names: Lobocyclendoceras Balashov 1968 [synonym], Paracyclendoceras Balashov 1968 [synonym]

G. †Cameroceras Conrad 1842

†Cameroceras curvatum Ruedemann 1906

†Cameroceras hasta d'Eichwald 1860

Invalid names: Endoceras megastoma Eichwald 1857 [synonym], Rossicoceras pirguense Balashov 1968 [synonym]

†Cameroceras motsognir Kröger and Aubrechtová 2019

†Cameroceras planum Balashov 1968

†Cameroceras regulus Eichwald 1860

Invalid names: Endoceras iucundum Stumbur 1956 [synonym], Orthoceras turris Angelin 1880 [synonym]

†Cameroceras rowenaense Frey 1995

†Cameroceras trentonense Conrad 1842

†Cameroceras turrisoides Kröger 2013

Invalid names: Rossicoceras Balashov 1961 [synonym]

G. †Changkiuoceras Shimizu and Obata 1935

G. †Chisiloceras Gortani 1934

†Chisiloceras luganusense Balashov 1968

G. †Cyclendoceras Grabau and Shimer 1910

†Cyclendoceras annulatum Hall 1847

†Cyclendoceras clarki Flower 1958

†Cyclendoceras dubium Strand 1934

†Cyclendoceras norvegicum Strand 1934

G. †Dideroceras Flower 1950

†Dideroceras festinans Blake 1882

†Dideroceras gracile Flower 1964

†Dideroceras holmi Flower 1964

†Dideroceras magnum Flower 1964

†Dideroceras ventrale Flower 1964

†Dideroceras wahlenbergi Foord 1887

G. †Endoceras Hall 1847

†Endoceras annuliferum Flower 1941

†Endoceras aristides Billings 1865

†Endoceras baffinense Foerste 1928

†Endoceras baylorense Ulrich et al. 1944

†Endoceras calvini Ulrich et al. 1944

†Endoceras champlainense Ruedemann 1906

†Endoceras deparcum Billings 1859

†Endoceras eburneolum Stauffer 1937

†Endoceras fulgur Billings 1866

Invalid names: Orthoceras propinquum Billings 1857 [replaced]

†Endoceras glaucus Billings 1865

†Endoceras hageri Hall 1861

†Endoceras hasta d'Eichwald 1860

†Endoceras hudsoni Ruedemann 1906

†Endoceras indigator Billings 1865

†Endoceras knighti Ulrich et al. 1944

†Endoceras lamottense Ulrich et al. 1944

†Endoceras lawrencense Ulrich et al. 1944

†Endoceras logani Ulrich et al. 1944

†Endoceras magister Ruedemann 1906

†Endoceras microlobatum Flower 1958

†Endoceras naekki Kröger and Aubrechtová 2019

†Endoceras perannulatum Portlock 1843

†Endoceras philipsburgense Ulrich et al. 1944

†Endoceras primigenium Vanuxem 1842

†Endoceras proteiforme Hall 1847

†Endoceras raymondi Flower 1958

†Endoceras richardsoni Ulrich et al. 1944

†Endoceras sansabaense Ulrich et al. 1944

†Endoceras seticornium Strand 1934

†Endoceras tityrus Billings 1865

†Endoceras trundlesense Ulrich et al. 1944

†Endoceras vaginatum Schlotheim 1820

Invalid names: Cyclendoceras buchi Lesnikova 1949 [synonym], Lobocyclendoceras kundense Balashov 1968 [synonym], Orthoceratites cancellatus d'Eichwald 1842 [synonym], Orthoceratites trochlearis Hisinger 1831 [synonym], Protocyclendoceras balticum Balashov 1968 [synonym], Protocyclendoceras iruense Balashov 1968 [synonym]

†Endoceras warthini Ulrich et al. 1944

†Endoceras yellvillense Ulrich et al. 1944

G. †Foerstellites Kobayashi 1940

G. †Hemipiloceras Shimizu and Obata

G. †Ignoceras

G. †Kailuanoceras Obata 1940

G. †Kaipingoceras Shimizu and Obata 1937

G. †Kiotoceras

G. †Kotoceras Kobayashi 1934

†Kotoceras grabaui Kobayashi 1927

Invalid names: Vaginoceras frechi Kobayashi 1927 [synonym]

G. †Kutorgoceras Balashov 1962

G. †Lamottoceras Flower 1955

†Lamottoceras franklini Flower 1958

†Lamottoceras nodosum Flower 1955

†Lamottoceras ruedemanni Flower 1955

G. †Linchengoceras Obata 1940

G. †Liskeardia Wilson 1939

G. †Najaceras

G. †Nanno Clarke 1894

†Nanno noveboracum Ruedemann 1906

G. †Neokaipingoceras Obata 1940

G. †Palaeocyclendoceras Balashov 1968

†Palaeocyclendoceras eichwaldi Balashov 1968

G. †Paleocyclendoceras Balashov 1968

†Paleocyclendoceras damesii Dewitz 1880

†Paleocyclendoceras rectestrigatum Schröder 1881

†Paleocyclendoceras zaddachi Schröder 1881

G. †Paravaginoceras Kobayashi 1934

G. †Protocyclendoceras

G. †Suecoceras Holm 1896

†Suecoceras marcoui Ruedemann 1906

G. †Tasmanoceras Teichert and Glenister 1952

†Tasmanoceras zeehanense Teichert and Glenister 1952

G. †Triendoceras Flower 1958

†Triendoceras davisi Frey 1995

†Triendoceras montrealense Flower 1958

†Triendoceras orthoseptatum Flower 1958

G. †Trifurcatoceras Obata 1940

G. †Vaginoceras Hyatt 1884

†Vaginoceras oppletum Ruedemann 1906

G. †Vaningenoceras Flower 1958

†Vaningenoceras indomitum Flower 1958

†Vaningenoceras styliforme Flower 1958

G. †Ventrolobendoceras Balashov 1968

†Ventrolobendoceras grandiense Balashov 1968

G. †Eocameroceras

G. †Hoyoceras

G. †Pronajaceras

Fm. †Proterocameroceratidae Kobayashi 1937

G. †Campendoceras Teichert and Glenister 1954

G. †Clitendoceras Ulrich and Foerste 1936

†Clitendoceras montrealense Ruedemann 1906

†Clitendoceras saylesi Ulrich and Foerste 1936

G. †Cotteroceras Ulrich and Foerste 1936

†Cotteroceras compressum Ulrich and Foerste 1936

G. †Escharendoceras Flower 1956

†Escharendoceras eccentricum Flower 1956

G. †Exoclitendoceras Kröger and Landing 2008

†Exoclitendoceras rochdalense Kröger and Landing 2008

G. †Kirkoceras Ulrich and Foerste 1936

†Kirkoceras arcuatum Ulrich and Foerste 1936

†Kirkoceras bradleyi Ulrich et al. 1943

†Kirkoceras compressum Ulrich et al. 1943

†Kirkoceras gracile Ulrich et al. 1943

†Kirkoceras missisquoi Billings 1865

†Kirkoceras obliquum Ulrich et al. 1943

G. †Kugeloceras

G. †Lobendoceras Teichert and Glenister 1954

†Lobendoceras undulatum Kröger and Evans 2011

G. †Lobosiphon Flower 1956

G. †Manitouoceras Ulrich et al. 1944

G. †Mccluskiceras Kröger and Landing 2008

†Mccluskiceras comstockense Kröger and Landing 2008

G. †Mcqueenoceras Ulrich and Foerste 1936

†Mcqueenoceras jeffersonense Ulrich and Foerste 1936

G. †Meniscoceras Flower 1941

†Meniscoceras coronense Flower 1941

G. †Mysticoceras Ulrich and Foerste 1936

†Mysticoceras marcoui Ruedemann 1906

G. †Oderoceras Ulrich et al. 1943

†Oderoceras depressum Ulrich et al. 1943

†Oderoceras edax Billings 1865

†Oderoceras sevierense Ulrich et al. 1943

†Oderoceras virginianum Ulrich et al. 1943

G. †Palaeocycloceras

†Palaeocycloceras eichwaldi Balashov 1968

G. †Paraendoceras Ulrich and Foerste 1936

†Paraendoceras depressum Kröger and Landing 2008

†Paraendoceras jeffersonense Ulrich and Foerste 1935

†Paraendoceras wappingerense Ulrich et al. 1944

G. †Phragmosiphon Flower 1956

†Phragmosiphon septiferum Flower 1956

G. †Platysiphon Flower 1956

†Platysiphon expansum Flower 1956

G. †Pliendoceras Flower 1956

G. †Proendoceras Flower 1955

G. †Proterocameroceras Ruedemann 1905

†Proterocameroceras baculoides Blake 1882

†Proterocameroceras brainerdi Whitfield 1886

†Proterocameroceras durinum Blake 1882

†Proterocameroceras sibiricum Balashov 1955

G. †Protocyptendoceras Cecioni 1965

†Protocyptendoceras fuenzalidae Cecioni 1965

Invalid names: Protocyptendoceras corvalani Cecioni 1965 [synonym], Protocyptendoceras teicherti Cecioni 1965 [synonym]

†Protocyptendoceras longicameratum Kröger and Lefebvre 2012

G. †Retroclitendoceras Flower 1956

G. †Stenosiphon Flower 1956

†Stenosiphon sandoi Flower 1956

Fm. †Thylacoceratidae Teichert and Glenister 1954

G. †Talassoceras Balashov 1960

G. †Thylacoceras Teichert and Glenister 1952

†Thylacoceras kimberleyense Teichert and Glenister 1952

G. †Trinitoceras

G. †Yehlioceras Shimizu and Obata 1937

Fm. †Yorkoceratidae Flower 1968

G. †Sewardoceras

G. †Telleroceras

G. †Yorkoceras

Invalid names: Baltoceras pusillum Ruedemann 1906 [nomen dubium]

G. †Hemiceratites Eichwald 1840

Or. †Intejocerida Balashov 1960

Fm. †Majoceratidae Zhuravleva 1964

G. †Majoceras Zhuravleva 1964

†Majoceras jakutense Zhuravleva 1964

G. †Pradoceras Sampelayo 1938

G. †Sidemina de Castelnau 1843

G. †Erlangericheilus Shimanskiy 1947

G. †Gonatocheilus Till 1907

G. †Hadrocheilus Till 1907

Subg. †Hadrocheilus (Arcuatobeccus) Shimanskiy 1947

Subg. †Hadrocheilus (Convexiterbeccus) Shimanskiy 1947

Subg. †Hadrocheilus (Dentatobeccus) Shimanskiy 1947

Subg. †Hadrocheilus (Globosobeccus) Shimanskiy 1947

Subg. †Hadrocheilus (Hadrocheilus) Till 1907

G. †Lamellaptychus Trauth 1927 [ammonoid aptychus]

Invalid names: Solennites Schlotheim 1813 [nomen dubium], Trigonellites Parkinson 1811 [synonym]

G. †Leptocheilus Till 1907

Subg. †Leptocheilus (Leptocheilus) Till 1907

Subg. †Leptocheilus (Mesocheilus) Till 1909

Subcl. †Multiceratoidea Mutvei 2013

Fm. †Apocrinoceratidae Flower and Teichert 1957

G. †Apocrinoceras Teichert and Glenister 1954

†Apocrinoceras talboti Teichert and Glenister 1954

G. †Destombesiceras Kröger and Lefebvre 2012

†Destombesiceras zagorense Kröger and Lefebvre 2012

G. †Paldoceras Kröger et al. 2009

†Paldoceras neptunsakerense Kröger et al. 2009

†Paldoceras paldiskense Kröger et al. 2009

Fm. †Apsidoceratidae Hyatt 1884

G. †Apsidoceras Hyatt 1884

†Apsidoceras quebecense Flower 1952

G. †Charactoceras Foerste 1924

†Charactoceras baeri Meek and Worthen 1865

†Charactoceras cinereum Blake 1882

†Charactoceras estonicum Strand 1934

†Charactoceras hercules Billings 1857

†Charactoceras kallholnense Frye 1982

†Charactoceras raettvikense Frye 1982

†Charactoceras suecicum Frye 1982

†Charactoceras triangulum Frye 1982

Invalid names: Charactocerina Foerste 1935 [synonym]

G. †Chidleyenoceras Shimizu and Obata 1935

G. †Deckeroceras Foerste 1935

G. †Fremontoceras Foerste 1935

†Fremontoceras giganteum Flower 1952

†Fremontoceras jewetti Flower 1947

G. †Kinaschukoceras

G. †Wilsonoceras Foerste 1929

Or. †Ascocerida Kuhn 1949

Fm. †Ascoceratidae Barrande 1867

G. †Ascoceras Barrande 1847

Subfm. †Ascoceratinae Barrande 1867

G. †Aphragmites Barrande 1865

G. †Glossoceras Barrande 1865

G. †Parascoceras Miller 1932

G. †Billingsites Hyatt 1864

†Billingsites anticostiensis Billings 1866

†Billingsites canadensis Billings 1857

†Billingsites deformis Eichwald 1860

†Billingsites manitoulinense Foerste 1924

G. †Schuchertoceras Miller 1932

†Schuchertoceras anticostiensis Billings 1866

†Schuchertoceras bodense Frye 1982

†Schuchertoceras fryi Kröger 2013

†Schuchertoceras norvegicum Barrande 1867

†Schuchertoceras troedssoni Foerste 1929

Invalid names: Schuchertoceras ringerikiense Strand 1934 [synonym]

G. †Shamattawaceras Foerste and Savage 1927

Fm. †Hebetoceratidae Flower 1940

G. †Ecdyceras Flower 1941

†Ecdyceras sinuiferum Flower 1941

G. †Hebetoceras Flower 1941

†Hebetoceras cylindriforme Flower 1941

†Hebetoceras mirandum Flower 1941

G. †Montyoceras Flower 1941

†Montyoceras arcuatum Flower 1941

†Montyoceras curviseptatum Flower 1941

†Montyoceras titaniforme Flower 1941

G. †Parvihebetoceras Kröger 2007

†Parvihebetoceras wahli Kröger 2007

Invalid names: Hebetoceratinae Flower 1941 [empty]

G. †Linstroemoceras

Fm. †Probillingsitidae Kröger 2013

G. †Probillingsites Foerste 1928

†Probillingsites cobourgensis Flower 1952

†Probillingsites inflatus Flower 1952

†Probillingsites scandinavicum Kröger 2013

†Probillingsites welleri Foerste 1928

G. †Redpathoceras Flower 1963

†Redpathoceras bullatum Kröger 2013

†Redpathoceras depressum Kröger 2013

†Redpathoceras magnum Kröger 2013

Fm. †Bassleroceratidae Ulrich et al. 1944

G. †Anguloceras Unklesbay and Young 1956

†Anguloceras depressum Unklesbay and Young 1956

†Anguloceras ovatum Unklesbay and Young 1956

†Anguloceras rotundum Unklesbay and Young 1956

G. †Avaoceras Ulrich et al. 1944

†Avaoceras elongatum Ulrich et al. 1944

†Avaoceras longidomum Ulrich et al. 1944

†Avaoceras magnisiphonatum Ulrich et al. 1944

†Avaoceras wellsense Ulrich et al. 1944

G. †Avoceras Sepkoski 2002

G. †Dwightoceras Ulrich and Foerste 1936

†Dwightoceras dactyloides Dwight 1884

G. †Lawrenceoceras Ulrich et al. 1944

†Lawrenceoceras breve Ulrich et al. 1944

†Lawrenceoceras collinsi Ulrich et al. 1944

†Lawrenceoceras confertissimum Whitfield 1886

G. †Leptocyrtoceras Ulrich et al. 1944

†Leptocyrtoceras curvatum Ulrich et al. 1944

†Leptocyrtoceras powellense Ulrich et al. 1944

†Leptocyrtoceras virginianum Ulrich et al. 1944

G. †Monogonoceras Ulrich et al. 1944

†Monogonoceras alabamense Ulrich et al. 1944

†Monogonoceras magnisiphonatum Ulrich et al. 1944

†Monogonoceras subrectum Ulrich et al. 1944

G. †Onychoceras Ulrich and Foerste 1936

†Onychoceras australe Ulrich et al. 1944

†Onychoceras subrotundum Ulrich et al. 1944

†Onychoceras surgens Barrande 1870

G. †Stylocyrtoceras Ulrich et al. 1944

†Stylocyrtoceras avaense Ulrich et al. 1944

†Stylocyrtoceras tantillum Stauffer 1937

Fm. †Clinoceratidae Flower 1946

G. †Clinoceras Mascke 1876

†Clinoceras dens Mascke 1876

G. †Whiteavesites Foerste 1929

G. †Whitfieldoceras Foerste 1932

†Whitfieldoceras gracile Flower 1952

†Whitfieldoceras lenticontractum Flower 1952

Fm. †Cyclostomiceratidae Foerste 1925

G. †Cyclostomiceras Hyatt 1900

†Cyclostomiceras cassinense Whitfield 1886

†Cyclostomiceras depressius Cecioni 1953

†Cyclostomiceras depressum Ulrich et al. 1943

†Cyclostomiceras minimum Whitfield 1886

†Cyclostomiceras thorali Kröger and Evans 2011

†Cyclostomiceras vasiforme Dwight 1884

Invalid names: Amphoroceras Ulrich and Foerste 1936 [synonym]

G. †Eocyclostomiceras Chen in Qi et al 1983

†Eocyclostomiceras clinoseptatum Chen, in Qi et al 1983

†Eocyclostomiceras subventrum Chen, in Qi et al 1983

†Eocyclostomiceras ventrum Chen, in Qi et al 1983

G. †Microstomiceras King 1998

†Microstomiceras holmi King 1998

G. †Paracyclostomiceras Cecioni 1953

†Paracyclostomiceras floweri Cecioni 1953

†Paracyclostomiceras paucitumidum King 1998

G. †Pictetoceras Foerste 1926

†Pictetoceras oliviae King 1998

Or. †Cyrtocerinida Mutvei 2015

Fm. †Cyrtocerinidae Flower 1946

G. †Centrocyrtocerina Stait 1983

†Centrocyrtocerina frizonensis Stait 1983

G. †Cyrtocerina Billings 1865

†Cyrtocerina crenulata Flower 1952

†Cyrtocerina foerstei Flower 1952

†Cyrtocerina kimmswickense Flower 1952

G. †Rummoceras Kröger and Aubrechtova 2017

†Rummoceras rummuensis Kröger and Aubrechtova 2017

Or. †Discosorida Flower 1950

G. †Aipetoceras

G. †Akroceras

G. †Anamesoceras

G. †Asbestoceras

G. †Brodekoceras

G. †Carotites

G. †Chuticeras

G. †Comaroceras

Fm. †Cyrtogomphoceratidae Flower 1940

G. †Brachydomoceras Teichert and Glenister 1952

†Brachydomoceras erectum Teichert and Glenister 1952

G. †Cyrtogomphoceras Foerste 1924

†Cyrtogomphoceras magnum Whiteaves 1890

†Cyrtogomphoceras troedssoni Teichert 1930

G. †Furudaloceras Kröger and Aubrechtová 2019

†Furudaloceras tomtei Kröger and Aubrechtová 2019

G. †Kiaeroceras Strand 1934

†Kiaeroceras frognoyense Strand 1934

†Kiaeroceras heroyense Strand 1934

G. †Konglungenoceras Sweet 1959

G. †Kullsbergoceras Kröger and Aubrechtová 2019

†Kullsbergoceras nissei Kröger and Aubrechtová 2019

G. †Landeroceras Foerste 1935

G. †Parryoceras Sweet and Miller 1957

G. †Pectinoceras Teichert and Glenister 1952

†Pectinoceras subtrigonum McCoy 1876

G. †Polyelasmoceras Teichert and Glenister 1952

†Polyelasmoceras aduncum Teichert and Glenister 1952

G. †Strandoceras Flower 1946

†Strandoceras orvikui Kröger 2007

†Strandoceras schmidti Teichert 1930

†Strandoceras sonax Salter 1858

†Strandoceras sphinx Schmidt 1858

†Strandoceras strandi Sweet 1958

†Strandoceras tyriense Strand 1934

G. †Ulrichoceras Foerste 1928

G. †Deiloceras

Fm. †Discosoridae Miller 1889

G. †Alpenoceras Foerste 1927

Invalid names: Endostokesoceras [synonym], Neodiscosorus [synonym]

G. †Discosorus Hall 1852

†Discosorus halli Foerste 1924

†Discosorus infelix Billings 1866

G. †Drakonoceras

G. †Dynatoceras

G. †Elpisoceras

Fm. †Entimoceratidae Zhuravleva 1972

G. †Aigoceras Zhuravleva 1972

G. †Aletoceras Flower 1938

G. †Andreioceras Zhuravleva 1972

G. †Anglicornus Flower and Caster 1935

G. †Athanatoceras Zhuravleva 1972

G. †Chrysoceras Zhuravleva 1972

G. †Deinoceras Zhuravleva 1972

G. †Edenoceras Miagkova 1967

†Edenoceras hiliferum Miagkova 1967

G. †Elaphoceras Zhuravleva 1972

G. †Entimoceras Zhuravleva 1972

G. †Gonatocyrtoceras Foerste 1926

G. †Jaregoceras Zhuravleva 1972

G. †Kadaroceras Zhuravleva 1972

G. †Karadzharoceras Zhuravleva 1972

G. †Katageioceras Zhuravleva 1972

G. †Kitatites Zhuravleva 1972

G. †Kladiscoceras Zhuravleva 1972

G. †Lysagoroceras Schönenberg 1952

†Lysagoroceras angustum Schönenberg 1952

G. †Micronoceras Flower 1938

G. †Mjandymoceras Zhuravleva 1972

G. †Pancornus Zhuravleva 1972

G. †Pantoioceras Zhuravleva 1972

G. †Plagioceras Zhuravleva 1972

G. †Rhynchoceras Zhuravleva 1972

G. †Selenoceras Zhuravleva 1972

G. †Sophoceras Zhuravleva 1972

G. †Stagonites Zhuravleva 1972

G. †Stroggyloceras Zhuravleva 1972

G. †Taskanoceras Zhuravleva 1972

G. †Tritonoceras Zhuravleva 1972

G. †Ungulites Zhuravleva 1972

G. †Zooceras Zhuravleva 1972

G. †Exochoceras

G. †Flowerites Zhuravleva 1972

†Flowerites sobolewi Dzik 1984

G. †Gouldoceras Stait 1980

†Gouldoceras obliquum Teichert and Glenister 1953

†Gouldoceras synchonena Stait 1980

G. †Huanghuachangoceras

G. †Hysteroceras

†Hysteroceras pseudocornutum Spath 1934

†Hysteroceras serpentinum Spath 1934

†Hysteroceras simplicicosta Spath 1934

G. †Kotelnyoceras

Fm. †Lowoceratidae Flower 1940

G. †Endodiscosorus Teichert 1931

G. †Kayoceras Foerste 1934

G. †Lowoceras Foerste and Savage 1927

G. †Stokesoceras Foerste 1924

G. †Tuyloceras Foerste and Savage 1927

G. †Lymoceras Zhuravleva 1979

Invalid names: Myloceras Zhuravleva 1972 [replaced]

Fm. †Mandaloceratidae Flower and Teichert 1957

G. †Cayugoceras Flower 1947

G. †Cinctoceras Flower 1957

G. †Mandaloceras Hyatt in Zittel 1900

G. †Ovocerina Flower 1957

G. †Pseudogomphoceras Flower 1957

G. †Umbeloceras Flower 1957

G. †Vespoceras Flower 1957

G. †Manjoceras

Fm. †Mesoceratidae Hyatt 1884

G. †Mesoceras Barrande 1877

G. †Metrioceras

G. †Nipageroceras

G. †Nucites

G. †Paramecynoceras

G. †Parawestonoceras Zhuravleva 1972

G. †Parevlanoceras

G. †Pelagoceras

Fm. †Phragmoceratidae Miller 1877

G. †Endoplectoceras Foerste 1924

Invalid names: Antigyroceras [synonym]

G. †Phragmoceras Broderip 1839

†Phragmoceras munthei Hedström 1917

Invalid names: Phragmoceras convolutum Hedström 1917 [synonym]

Invalid names: Pseudophragmoceras Zhuravleva 1972 [synonym]

G. †Phragmocerina Flower 1948

G. †Pristeroceras Ruedmann 1925

G. †Protophragmoceras Hyatt 1900

†Protophragmoceras erskinei Lamont 1978

†Protophragmoceras murchisoni Barrande 1867

G. †Pseudendoplectoceras Kröger 2008

†Pseudendoplectoceras lahcani Kröger 2008

G. †Sthenoceras Flower 1957

G. †Talattoceras Miagkova 1967

†Talattoceras crenatum Miagkova 1967

†Talattoceras inflatum Miagkova 1967

G. †Tubiferoceras Hedström 1917

†Tubiferoceras labiatum Whitfield 1878

G. †Physioceras

G. †Pseudobolloceras

G. †Radoceras

G. †Raphanites

G. †Ropaloceras

G. †Smileoceras

G. †Spondeioceras

G. †Strobiloceras

G. †Synetoceras

G. †Taoqupoceras

G. †Taxyceras

Fm. †Taxyceratidae Zhuravleva 1972

G. †Cyclopoceras Mironenko 2018

†Cyclopoceras abundans Zhuravleva 1972

†Cyclopoceras cyclops Wenjukoff 1886

Invalid names: Cyclopites Zhuravleva 1962 [replaced]

G. †Therioceras

G. †Ukhtoceras

G. †Urtasymoceras

Fm. †Westonoceratidae Teichert 1933

G. †Antiphragmoceras Foerste 1925

G. †Broeggeroceras Sweet 1958

†Broeggeroceras contractum Sweet 1958

†Broeggeroceras elongatum Sweet 1958

G. †Clarkesvillia Flower 1946

G. †Faberoceras Flower 1946

†Faberoceras subarctuatum Portlock 1843

G. †Glyptodendron Claypole 1878

†Glyptodendron eatonense Claypole 1878

Invalid names: Glyptoceras Foerste 1893 [objective synonym]

G. †Hecatoceras Teichert and Glenister 1952

†Hecatoceras longinquum Teichert and Glenister 1952

G. †Hemibeloitoceras Balashov 1962

†Hemibeloitoceras arduum Kröger and Aubrechtova 2017

†Hemibeloitoceras ellipsoidale Balashov 1962

†Hemibeloitoceras molis Kröger and Aubrechtova 2017

G. †Lavaloceras Flower 1952

†Lavaloceras geniculatum Flower 1952

G. †Reedsoceras Foerste 1929

G. †Simardoceras Flower 1957

G. †Sinclairoceras Flower 1952

†Sinclairoceras haha Flower 1952

G. †Teichertoceras Foerste 1933

G. †Westonoceras Foerste 1924

†Westonoceras askerense Strand 1934

†Westonoceras baffinense Schuchert 1900

†Westonoceras cornulum Schuchert 1900

†Westonoceras manitobense Whiteaves 1890

†Westonoceras osloense Strand 1934

Invalid names: Thuleoceras Troedsson 1928 [synonym]

G. †Winnipegoceras Foerste 1928

†Winnipegoceras fragmentaricum Strand 1934

†Winnipegoceras laticurvatum Whiteaves 1897

†Winnipegoceras sinclairi Flower 1952

G. †Xiphoceras

Or. †Oncocerida Flower and Kummel, Jr. 1950

Fm. †Acleistoceratidae Flower 1950

G. †Acleistoceras Hyatt 1884

†Acleistoceras albani Clarke 1908

G. †Amphicyrtoceras Foerste 1924

†Amphicyrtoceras benedictae Strand 1934

G. †Anomeioceras Foerste 1930

G. †Austinoceras Foerste 1934

G. †Byronoceras Foerste and Savage 1927

G. †Chadwickoceras Foerste 1930

G. †Clionyssiceras Foerste 1930

G. †Crateroceras Foerste and Savage 1927

G. †Ectocyrtoceras Foerste 1930

G. †Euryrizoceras Foerste 1935

G. †Galtoceras Foerste 1934

G. †Grimsbyoceras Foerste 1934

G. †Hercocyrtoceras Foerste 1927

G. †Paracleistoceras Foerste 1926

G. †Perioidanoceras Foerste 1930

G. †Poteriocerina Foerste 1926

G. †Rhomboceras Foerste 1934

Invalid names: Rhomboceras [objective synonym]

G. †Slocomoceras Foerste 1930

G. †Streptoceras Billings 1866

G. †Tumidoceras Flower 1949

G. †Worthenoceras Foerste 1930

G. †Yunnanoceras Chen et al. 1981

G. †Agrioceras

Fm. †Aktjuboceratidae Zhuravleva 1972

G. †Aktjubocheilus

G. †Irinites

G. †Alloceras

G. †Almaloceras

G. †Anonymoceras

G. †Anthomorpha Author

G. †Antonoceras Shimanskiy 1957

G. †Aphyctoceras

†Aphyctoceras annulatum Barrande 1865

Invalid names: Ptenoceras annulatum Chlupác 1957 [synonym]

G. †Apioceras Fahrenkohl 1844

Fm. †Archiacoceratidae Teichert 1939

G. †Archiacoceras Foerste 1926

G. †Cyrtoceratites Goldfuss 1830

G. †Devonocheilus Shimanskiy 1962

G. †Atomoceras

G. †Balashovia

G. †Barskoceras Leonova and Shchedukhin 2020

†Barskoceras mirum Leonova and Shchedukhin 2020

Fm. †Brevicoceratidae Flower 1945

G. †Blastocerina Flower 1940

G. †Brevicoceras Flower 1938

†Brevicoceras casteri Flower 1938

†Brevicoceras magnum Kröger 2008

Subfm. †Brevicoceratinae Flower 1941

G. †Cyrtractoceras Chen et al. 1981

G. †Cerovoceras Kröger 2008

†Cerovoceras brevidomus Kröger 2008

†Cerovoceras fatimi Kröger 2008

G. †Eleusoceras Flower 1938

G. †Exocyrtoceras Flower 1938

†Exocyrtoceras minutum Flower 1945

†Exocyrtoceras reimanni Flower 1945

G. †Foersteoceras Ruedemann 1925

G. †Gonionaedyceras Flower 1945

G. †Gyronaedyceras Flower 1945

G. †Mitroceras Hyatt 1894

G. †Naedyceras Hyatt 1884

†Naedyceras contractum Flower 1945

†Naedyceras gibbosum Flower 1945

Invalid names: Gyroceras Owen 1844 [synonym]

G. †Ovoceras Flower 1936

G. †Oxygonioceras Foerste 1925

G. †Stereotoceras Flower 1950

Subfm. †Stereotoceratinae Chen et al. 1981

G. †Eostereotoceras Chen et al. 1981

G. †Verticoceras Flower 1936

G. †Wissenbachia Foerste 1926

G. †Corbuloceras

G. †Corysoceras

Superfm. †Cyrthocerataceae Chapman 1857

Fm. †Cyrthoceratidae Chapman 1857

G. †Oyogiroceras Miagkova 1967

G. †Pachiceras Miagkova 1967

Fm. †Maelonoceratidae Hyatt 1884

G. †Neoceras Miagkova 1967

Fm. †Oocerinidae Teichert 1938

G. †Hiregiroceras Miagkova 1967

G. †Moyerocanoceras Miagkova 1967

G. †Paroocerina Zhuravleva 1961

G. †Cyrtoceras

Subg. †Cyrtoceras (Meloceras) Foord 1888

†Cyrtoceras indomitum Barrande 1867

†Cyrtoceras minneapolis Clarke 1897

†Cyrtoceras murchisoni Barrande 1867

†Cyrtoceras nevadense Walcott 1884

Fm. †Devonocheilidae Zhuravleva 1972

G. †Lysagoroceras Schönenberg 1952

G. †Onyxites Zhuravleva 1972

†Onyxites onerosus Zhuravleva 1972

G. †Platyconoceras Zhuravleva 1972

Fm. †Diestoceratidae Foerste 1926

G. †Danoceras Troedsson 1926

†Danoceras breve Strand 1934

†Danoceras broggeri Strand 1934

†Danoceras inutile Flower 1952

†Danoceras ravni Troedsson 1926

†Danoceras scandinavicum Strand 1934

†Danoceras skalbergensis Kröger and Aubrechtová 2019

Invalid names: Hyperoceras Foerste 1928 [synonym]

G. †Diestoceras Foerste 1924

†Diestoceras acuminatum Strand 1934

†Diestoceras anticostiense Foerste 1928

†Diestoceras approximatum M'Coy 1846

†Diestoceras breviconum Portlock 1843

†Diestoceras carletonense Twenhofel 1928

†Diestoceras eos Hall and Whitfield 1875

†Diestoceras inaequiseptum Portlock 1843

†Diestoceras indianense Miller and Faber 1894

†Diestoceras isotelorum Strand 1934

†Diestoceras lamonti Teichert 1940

†Diestoceras lavalense Flower 1952

†Diestoceras scoticum Teichert 1940

†Diestoceras shideleri Foerste 1924

†Diestoceras sinclairi Flower 1952

†Diestoceras stensioei Troedsson 1926

†Diestoceras stormeri Strand 1934

†Diestoceras sycon Flower 1952

†Diestoceras waynesvillense Flower 1946

G. †Dowlingoceras Foerste 1928

†Dowlingoceras gracile Whiteaves 1892

†Dowlingoceras piersalense Teichert 1930

G. †Lyckholmoceras Teichert 1930

†Lyckholmoceras constrictum Strand 1934

†Lyckholmoceras estoniae Teichert 1930

†Lyckholmoceras norvegiae Strand 1934

G. †Suttonoceras Miller and Youngquist 1947

†Suttonoceras rossorum Miller and Youngquist 1947

G. †Doleroceras

G. †Eocyrtoceras

G. †Eudoceras Hyatt 1884

G. †Gomphoceras Sowerby 1839

†Gomphoceras eichwaldi de Verneuil 1845

†Gomphoceras suboviforme Walcott 1884

Fm. †Graciloceratidae Flower in Flower and Kummel 1950

G. †Eorizoceras Flower 1943

†Eorizoceras platyceroides Flower 1943

G. †Graciloceras Flower 1943

†Graciloceras longidomum Flower 1943

G. †Isbergoceras Kröger and Aubrechtová 2019

†Isbergoceras consobrinum Kröger and Aubrechtová 2019

†Isbergoceras niger Kröger and Aubrechtová 2019

G. †Kundoceras Kröger et al. 2009

†Kundoceras evansi Kröger et al. 2009

G. †Leonardoceras Flower 1968

†Leonardoceras parvum Flower 1968

G. †Piersaloceras Teichert 1930

†Piersaloceras gageli Teichert 1930

G. †Pomerantsoceras Kröger 2007

†Pomerantsoceras tibia Kröger 2007

G. †Porkunioceras Kröger 2007

†Porkunioceras tuba Kröger 2007

G. †Ringoceras Strand 1934

†Ringoceras praecurvum Strand 1934

G. †Guangyuanoceras

G. †Guangyuanoceroides

Fm. †Hemiphragmoceratidae Foerste 1926

G. †Conradoceras Foerste 1926

G. †Hemiphragmoceras Hyatt in Zittel 1900

G. †Hexameroceras Hyatt 1884

G. †Octamerella Teichert and Sweet 1962

G. †Octameroceras Hyatt 1900

†Octameroceras callistoma Barrande 1867

†Octameroceras scotorum Lamont 1978

G. †Tetrameroceras Hyatt 1884

G. †Iowoceras

Fm. †Jovellaniidae Foord 1888

G. †Bohemojovellania Manda 2001

†Bohemojovellania adrae Kröger 2008

†Bohemojovellania bouskai Manda 2001

†Bohemojovellania obliquum Kröger 2008

G. †Herkimeroceras Foerste 1926

G. †Jovellania Bayle 1879

†Jovellania buchi Verneul 1850

†Jovellania cheirae Kröger 2008

G. †Kijoceras Zhuravleva 1982

†Kijoceras clarum Zhuravleva 1972

G. †Laumontoceras Foerste 1926

G. †Mixosiphonoceras Hyatt 1900

†Mixosiphonoceras desolatum Barrande 1877

†Mixosiphonoceras norvegicum Strand 1934

G. †Projovellania Hyatt 1900

†Projovellania athleta Barrande 1877

G. †Rhytidoceras Miagkova 1967

G. †Xyloceras Miagkova 1967

†Xyloceras jovellanum Miagkova 1967

†Xyloceras moyerocanum Miagkova 1967

Fm. †Karoceratidae Teichert 1939

G. †Ankyloceras Zhuravleva 1974

†Ankyloceras nesnayamiense Foerste 1925

G. †Kallholnoceras

G. †Karoceras Roussanoff 1909

G. †Osbornoceras Foerste 1936

G. †Shuranoceras Barskov 1959

G. †Ventrobalashovia Kröger 2008

†Ventrobalashovia zhuravlevae Kröger 2008

G. †Kophinoceras

G. †Lychnoceras

G. †Megaloceras

G. †Mimolychnoceras

G. †Mnemoceras

G. †Nelimenia Laporte 1843

Fm. †Nothoceratidae Fischer 1882

G. †Blakeoceras Foerste 1926

G. †Bolloceras Foerste 1926

G. †Conostichoceras Foerste 1926

G. †Cyrthoceratites d'Archiac and deVerneuil 1842

Invalid names: Cranoceras [synonym]

G. †Lorieroceras Foerste 1926

G. †Metaphragmoceras Flower 1938

Subfm. †Metaphragmoceratinae Chen et al. 1981

G. †Perimecoceras Foerste 1926

G. †Mutoblakeoceras Kröger 2008

†Mutoblakeoceras inconstans Kröger 2008

G. †Nothoceras Barrande 1856

Subfm. †Nothoceratinae Fischer 1882

G. †Mixosiphonocerina Chen et al. 1981

G. †Piestoocerina Chen et al. 1981

G. †Yichangoceras Chen et al. 1981

G. †Paraconradoceras Foerste 1926

G. †Tafilaltoceras Kröger 2008

†Tafilaltoceras adgoi Kröger 2008

G. †Turnoceras Foerste 1926

G. †Oligoceras

Fm. †Oncoceratidae Hyatt 1884

G. †Asaphiceras Foerste 1928

G. †Beloitoceras Foerste 1924

†Beloitoceras amoenum Miller 1879

†Beloitoceras bucheri Flower 1946

†Beloitoceras cautis Kröger and Aubrechtova 2017

†Beloitoceras estonicum Teichert 1930

†Beloitoceras huronense Billings 1865

†Beloitoceras kirtoni Teichert and Glenister 1953

†Beloitoceras lobiferum Flower 1952

†Beloitoceras orilliense Flower 1952

†Beloitoceras pandion Hall 1861

†Beloitoceras plebeium Hall 1861

†Beloitoceras stoermeri Sweet 1958

†Beloitoceras thorslundi Kröger and Aubrechtová 2019

G. †Centrorizoceras Foerste 1930

G. †Cyrtorizoceras Hyatt 1900

†Cyrtorizoceras borni Teichert 1930

†Cyrtorizoceras minneapolis Clarke 1897

†Cyrtorizoceras rusti Flower 1952

†Cyrtorizoceras tenue Strand 1934

†Cyrtorizoceras thorslundi Kröger 2013

G. †Dalecarlioceras Frye 1987

†Dalecarlioceras bodense Frye 1987

†Dalecarlioceras constrictum Frye 1987

†Dalecarlioceras dalecarlicum Frye 1987

G. †Digenuoceras Foerste 1935

G. †Dunleithoceras Foerste 1924

G. †Ehlersoceras Foerste 1932

G. †Ekwanoceras Foerste and Savage 1927

G. †Kentlandoceras Foerste 1932

G. †Laphamoceras Foerste 1933

†Laphamoceras scofieldi Foerste 1932

Invalid names: Cyrtoceras billingsi Clarke 1897 [synonym]

G. †Loganoceras Foerste 1932

G. †Maelonoceras Hyatt 1884

†Maelonoceras metellus Billings 1865

†Maelonoceras praematurum Billings 1860

Invalid names: Maelonoceras billingsi Foerste 1924 [synonym]

Invalid names: Meloceras Foord 1888 [synonym]

G. †Metarizoceras Foerste 1930

G. †Miamoceras Flower 1946

†Miamoceras bubsense Stait 1982

G. †Neumatoceras Foerste 1935

†Neumatoceras borense Kröger et al. 2009

†Neumatoceras drummuckense Teichert 1940

†Neumatoceras parviborense Kröger et al. 2009

G. †Oncoceras Hall 1847

†Oncoceras carletonense Twenhofel 1928

†Oncoceras major Frey 1995

†Oncoceras pauper Foerste 1924

†Oncoceras pristinum Ruedemann 1906

G. †Oocerina Foerste 1926

G. †Orthorizoceras Kröger 2008

†Orthorizoceras desertum Kröger 2008

†Orthorizoceras sinkovense Balashov 1968

G. †Paramiamoceras Chen 1987

†Paramiamoceras breviventrum Kröger et al. 2009

G. †Plesiorizosceras Chen et al. 1981

G. †Retizitteloceras Kröger et al. 2011

†Retizitteloceras rarum Kröger et al. 2011

G. †Richardsonoceras Foerste 1932

†Richardsonoceras gastroscopium Kröger et al. 2009

†Richardsonoceras gerhardi Kröger et al. 2009

†Richardsonoceras goldmanni Kröger et al. 2009

†Richardsonoceras haelluddenense Kröger et al. 2009

†Richardsonoceras sinuososeptatum Roemer 1861

Invalid names: Beloitoceras heterocurvatum Strand 1934 [synonym]

G. †Richardsonoceroides Chen 1987

†Richardsonoceroides kingi Kröger et al. 2009

†Richardsonoceroides oelandense Kröger et al. 2009

†Richardsonoceroides rhytium Kröger et al. 2009

†Richardsonoceroides schiefferdeckeri Dewitz 1880

G. †Rizoceras Hyatt 1884

†Rizoceras acris Miagkova 1967

†Rizoceras inventum Miagkova 1967

†Rizoceras rectum Miagkova 1967

G. †Romingoceras Foerste 1932

G. †Scofieldoceras Foerste 1932

G. †Tshingizoceras

G. †Vaupelia Flower 1946

G. †Zittelloceras Hyatt 1884

†Zitteloceras costatum Teichert 1940

†Zitteloceras hitzi Foerste 1910

†Zitteloceras praecedens Flower 1952

Fm. †Oonoceratidae Hyatt 1884

G. †Euryrizocerina Manda and Turek 2009

†Euryrizocerina normata Barrande 1877

G. †Oonoceras Hyatt 1884

†Ooceras lativentrum Ruedemann 1906

†Ooceras perkinsi Ruedemann 1906

†Ooceras seelyi Ruedemann 1906

†Oonoceras priscum Eichwald 1861

G. †Oratoceras

G. †Pachtoceras Foerste 1926

Fm. †Polyelasmoceratidae Shimanskiy 1956

G. †Codoceras Hyatt 1900

†Codoceras dubium Strand 1934

†Codoceras indomitum Barrande 1867

G. †Coelocyrtoceras Foerste 1926

G. †Cyrtocheilus Shimanskiy 1962

G. †Danaoceras Foerste 1926

G. †Evlanoceras Zhuravleva 1962

G. †Hipparionoceras Flower 1945

†Hipparionoceras expansum Flower 1945

†Hipparionoceras ichnoides Flower 1945

†Hipparionoceras iowaense Flower 1945

†Hipparionoceras lairdi Flower 1945

G. †Macrodomoceras Teichert and Glenister 1952

†Macrodomoceras howitti Teichert and Glenister 1952

G. †Turoceras Zhuravleva 1959

G. †Wadeoceras Teichert 1939

Fm. †Poterioceratidae Foord 1888

G. †Argocheilus Shimanskiy 1961

G. †Cyrtogomphus Flower 1938

G. †Mecynoceras Foerste 1926

G. †Poterioceras M'Coy 1844

Invalid names: Calchasiceras [synonym]

G. †Welleroceras Miller and Furnish 1938

G. †Xenoceras Flower 1952

G. †Pseudobrevicoceras

G. †Pyramidoceras

G. †Ramussenoceras Foerste 1932

Superfm. †Rutoceratoidea Hyatt 1884

Fm. †Hercoceratidae Hyatt 1884

G. †Otomaroceras Manda and Turek 2009

Fm. †Parauloceratidae Manda and Turek 2009

G. †Parauloceras Manda and Turek 2009

G. †Spanioceras

G. †Sycoceras Pictet 1854

G. †Torquatoceras

G. †Trigonodema Laporte 1843

Fm. †Trimeroceratidae Hyatt and Zittel 1900

G. †Clathroceras Foerste 1926

G. †Eotrimeroceras Foerste 1928

†Eotrimeroceras jupiterense Foerste 1928

G. †Inversoceras Hedström 1917

G. †Jeppssonoceras Stridsberg 1985

†Jeppssonoceras concentratum Stridsberg 1985

G. †Pentameroceras Hyatt 1884

G. †Platycomeroceras Chen et al. 1981

G. †Plemeroceras Stridsberg 1985

†Plemeroceras cassis Stridsberg 1985

G. †Stenogomphoceras Foerste 1930

G. †Trimeroceras Hyatt 1884

Fm. †Tripleuroceratidae Foerste 1926

G. †Psiaoceras Shimanskiy 1957

G. †Tripleuroceras Hyatt 1884

Fm. †Valcouroceratidae Flower 1946

G. †Actinomorpha Flower 1943

†Actinomorpha pupa Flower 1943

G. †Augustoceras Flower 1946

†Augustoceras molense Stait 1982

†Augustoceras shideleri Flower 1946

†Augustoceras vallandighami Miller 1874

G. †Fayettoceras Foerste 1932

G. †Kindleoceras Foerste 1924

†Kindleoceras reversatum Foerste 1924

†Kindleoceras triangulare Foerste 1924

G. †Manitoulinoceras Foerste 1924

†Manitoulinoceras gyroforme Flower 1946

†Manitoulinoceras lysander Billings 1865

†Manitoulinoceras postumius Billings 1865

G. †Minganoceras Foerste 1938

G. †Staufferoceras Foerste 1932

G. †Valcouroceras Flower 1943

†Valcouroceras bovinum Flower 1943

†Valcouroceras cyclops Flower 1943

†Valcouroceras elongatum Flower 1952

†Valcouroceras holtedahli Sweet 1958

†Valcouroceras obesum Flower 1943

†Valcouroceras seelyi Ruedemann 1906

†Valcouroceras tenuiseptum Ruedemann 1906

G. †Valkyrioceras Kröger and Aubrechtová 2019

†Valkyrioceras dalecarlia Kröger and Aubrechtová 2019

G. †Wetherbyoceras Foerste 1926

†Wetherbyoceras conoidale Wetherby 1881

G. †Xainzanoceras

Or. †Tarphycerida Flower and Kummel, Jr. 1950

G. †Bateroboceras

G. †Bodieceras

G. †Craftonoceras

Fm. †Estonioceratidae Hyatt 1900

G. †Aethoceras Teichert and Glenister 1954

G. †Alaskoceras Miller and Kummel 1945

G. †Aphetoceras Hyatt 1894

†Aphetoceras americanum Hyatt 1894

†Aphetoceras attenuatum Hyatt 1894

†Aphetoceras boreale Hyatt 1894

†Aphetoceras evolutum Ulrich et al. 1942

†Aphetoceras farnsworthi Billings 1861

†Aphetoceras oderi Ulrich et al. 1942

†Aphetoceras ozarkensis Cullison 1944

†Aphetoceras ruedemanni Ulrich et al. 1942

†Aphetoceras subcostulatum Ulrich et al. 1942

G. †Clytoceras

†Clytoceras capax Ulrich et al. 1942

G. †Deltoceras Hyatt 1894

†Deltoceras capax Ulrich et al. 1942

†Deltoceras planum Hyatt 1894

†Deltoceras vaningeni Ruedemann 1906

G. †Eichwaldoceras Balashov 1955

G. †Estonioceras Noetling 1883

†Estonioceras imperfectum Quenstedt 1845

G. †Pycnoceras Hyatt 1894

†Pycnoceras adamsense Stait 1983

†Pycnoceras apertum Hyatt 1894

†Pycnoceras calciferiforme Hyatt 1894

†Pycnoceras clausum Ulrich et al. 1942

†Pycnoceras rotundatum Ulrich et al. 1942

G. †Shumardoceras Ulrich and Foerste 1936

†Shumardoceras complanatum Shumard 1863

†Shumardoceras fragile Ulrich et al. 1942

†Shumardoceras taneyense Ulrich et al. 1942

G. †Tragoceras Remelé 1890

Invalid names: Deltoceratidae Ulrich et al. 1942 [synonym]

G. †Inclytoceras

G. †Magdoceras

Fm. †Ophidioceratidae Hyatt 1894

G. †Ophioceras Barrande 1865

Invalid names: Ophidioceras [synonym]

G. †Pakrioceras

G. †Pseudancistroceras

Fm. †Tarphyceratidae Hyatt 1894

G. †Bentoceras Stumbur 1962

†Bentoceras proteus Holm 1899

†Bentoceras rubeli Stumbur 1962

G. †Campbelloceras Ulrich and Foerste 1936

†Campbelloceras brevicameratum Ulrich et al. 1942

†Campbelloceras hyatti Ulrich et al. 1942

†Campbelloceras mcgerriglei Ulrich et al. 1942

†Campbelloceras rotundum Hyatt 1894

†Campbelloceras simplex Cullison 1944

†Campbelloceras virginianus Hyatt 1894

G. †Centrotarphyceras Ulrich and Foerste 1936

†Centrotarphyceras apheusi Ulrich et al. 1942

†Centrotarphyceras bidgei Ulrich et al. 1942

†Centrotarphyceras imperator Billings 1861

†Centrotarphyceras macdonaldi Hyatt 1894

†Centrotarphyceras powersi Ulrich et al. 1942

†Centrotarphyceras seelyi Whitfield 1886

†Centrotarphyceras subundosum Ulrich et al. 1942

†Centrotarphyceras yellvillense Ulrich et al. 1942

G. †Cycloplectoceras Ulrich et al. 1942

†Cycloplectoceras funatum Ulrich et al. 1942

†Cycloplectoceras miseri Ulrich et al. 1942

G. †Eurystomites Schröder 1891

†Eurystomites accelerans Ruedemann 1906

†Eurystomites amplectens Ruedemann 1906

†Eurystomites avensis Ulrich et al. 1942

†Eurystomites bolarensis Ulrich et al. 1942

†Eurystomites ferox Billings 1861

†Eurystomites gibbosum Hyatt 1894

†Eurystomites kelloggi Whitfield 1886

†Eurystomites undatum Hall 1847

G. †Falcilituites Remele 1886

G. †Moreauoceras Cullison 1944

G. †Pilotoceras Cullison 1944

G. †Pionoceras Ulrich et al. 1942

†Pionoceras peachi Evans 2011

†Pionoceras pompanium Billings 1862

†Pionoceras pomponium Billing 1862

†Pionoceras smithvillense Ulrich et al. 1942

†Pionoceras swartzi Ulrich et al. 1942

†Pionoceras vokesi Ulrich et al. 1942

G. †Planctoceras Schröder 1891

G. †Rectanguloceras Stumbur 1962

†Rectanguloceras rarospira Eichwald 1860

G. †Seelyoceras Ulrich and Foerste 1936

†Seelyoceras raei Whitfield 1889

G. †Sweetoceras Stumbur 1962

†Sweetoceras boreale Sweet 1958

G. †Tarphyceras Hyatt 1894

†Tarphyceras apollo Billings 1861

†Tarphyceras aucoini Hyatt 1894

†Tarphyceras chadwickense Ulrich et al. 1942

†Tarphyceras champlainense Whitfield 1886

†Tarphyceras clarkei Ruedemann 1906

†Tarphyceras convolvens Angelin and Lindstrom 1880

†Tarphyceras extensum Hyatt 1894

†Tarphyceras multicameratum Ruedemann 1906

†Tarphyceras palinurus Billings 1861

†Tarphyceras perkinsi Whitfield 1897

†Tarphyceras prematurum Hyatt 1894

Fm. †Trocholitidae Chapman 1857

G. †Arkoceras Ulrich et al. 1942

†Arkoceras exiguum Ulrich et al. 1942

G. †Curtoceras Ulrich et al. 1942

†Curtoceras abditus Kröger and Aubrechtova 2017

†Curtoceras billingsi Foerste 1938

†Curtoceras eatoni Whitfield 1886

Invalid names: Schroederoceras cassinense Whitfield 1886 [synonym]

†Curtoceras internastriatum Whitfield 1886

†Curtoceras minganense Foerste 1938

G. †Discoceras Barrande 1867

†Discoceras amtjaernense Kröger and Aubrechtová 2019

†Discoceras angulatum Saemann 1852

†Discoceras antiquissima Eichwald 1842

†Discoceras antiquissimus Roemer 1861

†Discoceras arctuatum Lossen 1860

†Discoceras depressum Sweet 1958

†Discoceras fleischeri Sweet 1958

†Discoceras hyatti Strand 1934

†Discoceras idaense Teichert and Glenister 1962

†Discoceras ievesense Balaschov 1953

†Discoceras nilssoni Kröger and Aubrechtová 2019

†Discoceras rarospira Eichwald 1860

†Discoceras roemeri Strand 1934

†Discoceras saemanni Hyatt 1894

†Discoceras siljanense Kröger et al. 2011

†Discoceras tubulatum Hyatt 1894

†Discoceras vasalemmense Balaschov 1953

G. †Graftonoceras Foerste 1925

G. †Hardmanoceras Teichert and Glenister 1952

†Hardmanoceras chrysanthimum Kobayashi 1959

†Hardmanoceras lobatum Teichert and Glenister 1952

G. †Jasperoceras Ulrich et al. 1942

†Jasperoceras costatum Ulrich et al. 1942

G. †Litoceras Hyatt 1883

†Litoceras calciferum Billings 1865

†Litoceras versutum Billings 1865

†Litoceras whiteavsi Hyatt 1894

G. †Palaeonautilus Remele 1881

†Palaeonautilus nakholmensis Kjerulf 1865

G. †Paradiscoceras Barskov 1972

†Paradiscoceras dissitum Stait et al. 1985

†Paradiscoceras orientale Barskov 1972

G. †Plectolites

G. †Schroederoceras Hyatt 1894

†Schroederoceras angulatum Saemann 1852

†Schroederoceras saemanni Hyatt 1894

†Schroederoceras tubulatum Hyatt 1894

G. †Trocholites Conrad 1838

†Trocholites ammonius Conrad 1838

†Trocholites contractus Schroeder 1891

†Trocholites depressus Eichwald 1860

†Trocholites faberi Foerste 1929

†Trocholites fugax Babin and Gutiérrez-Marco 1992

Invalid names: Lituites primulus Barrande 1865 [synonym]

†Trocholites gennadii Kröger and Aubrechtova 2017

†Trocholites gracilis Flower 1943

†Trocholites hospes Remele 1880

†Trocholites internestriatus Whitfield 1886

†Trocholites ruedemanni Flower 1943

G. †Trocholitoceras Hyatt 1894

†Trocholitoceras bevani Ulrich et al. 1942

†Trocholitoceras juvenicostatum Ulrich et al. 1942

†Trocholitoceras latum Ulrich et al. 1942

†Trocholitoceras philipsburgense Ulrich et al. 1942

†Trocholitoceras walcotti Hyatt 1894

G. †Wichitoceras Ulrich et al. 1942

†Wichitoceras chadwickense Ulrich et al. 1942

†Wichitoceras compressum Ulrich et al. 1942

†Wichitoceras crassum Ulrich et al. 1942

†Wichitoceras decipiens Ulrich et al. 1942

†Wichitoceras naylorense Ulrich et al. 1942

Fm. †Weberoceratidae Dzik 1984

G. †Weberoceras Barskov 1972

†Weberoceras mariannae Barskov 1972

Invalid names: Discoceratidae Dzik 1984 [empty]

Fm. †Uranoceratidae Hyatt 1900

G. †Cliftonoceras Flower 1957

G. †Cumingsoceras Flower 1950

G. †Jolietoceras Foerste 1925

G. †Siljanoceras Kröger 2013

†Siljanoceras varians Kröger 2013

G. †Uranoceras Hyatt 1884

G. †Warburgoceras Kröger 2013

†Warburgoceras longitudinale Angelin and Lindström 1880

Subcl. Nautilia Wade 1988

Or. Nautilida Agassiz 1847

G. †Adeloceras

Superfm. †Aipoceratoidea Hyatt 1883

Fm. †Aipoceratidae Hyatt 1883

G. †Aipoceras Hyatt 1883

G. †Asymptoceras Ryckholt 1852

G. †Librovitschiceras Shimanskiy 1957

Fm. †Scyphoceratidae Ruzhentsev and Shimanskiy 1954

G. †Arcuatoceras Niko et al. 2009

G. †Mariceras Ruzhentsev and Shimanskiy 1954

G. †Scyphoceras Ruzhentsev and Shimanskiy 1954

G. †Sorinoceras Flower 1963

G. †Venatoroceras Ruzhentsev and Shimanskiy 1954

Fm. †Solenochilidae Hyatt 1883

G. †Acanthonautilus Foord 1896

G. †Solenochilus Meek and Worthen 1870

Invalid names: Litogyroceratidae [empty]

Fm. †Aktubonautilidae Ruzhentsev and Shimanskiy 1954

G. †Aktubonautilus Ruzhentsev and Shimanskiy 1954

†Aktubonautilus eruciformis Ruzhentsev and Shimanskiy 1954

G. †Basleonautilus Ruzhentsev and Shimanskiy 1954

†Basleonautilus dyadicus Haniel 1915

G. †Alethynoceras

G. †Anepheloceras

G. †Anglonautlis Spath 1927

G. †Askeatonolucidum

G. †Bastindoceras

G. †Capriocornites

G. †Catastroboceras

†Catastroboceras consanguineum Shimanskiy 1967

†Catastroboceras quadratum Fleming 1828

†Catastroboceras subsulcatiformae Shimanskiy 1967

Fm. †Centroceratidae Hyatt in Zittel 1900

G. †Carlloceras Flower and Caster 1935

G. †Centroceras Hyatt 1884

†Centroceras marcellensis Vanuxem 1842

G. †Diorugoceras Hyatt 1893

†Diorugoceras egregium Shimanskiy 1967

G. †Homaloceras Whiteaves 1891

G. †Phacoceras Hyatt 1884

†Phacoceras electum Shimanskiy 1967

†Phacoceras oxystomum Phillips 1836

†Phacoceras semirutum Shimanskiy 1967

G. †Strophiceras Hyatt 1884

Superfm. †Clydonautiloidea Hyatt in Zittel 1900

Fm. †Clydonautilidae Hyatt in Zittel 1900

G. †Callaionautilus Kieslinger 1924

G. †Clydonautilus Mojsisovics 1882

G. †Cosmonautilus Hyatt and Smith 1905

G. †Proclydonautilus Mojsisovics 1902

G. †Styrionautilus

Fm. †Ephippioceratidae Miller and Youngquist 1949

G. †Ephippioceras Hyatt 1884

G. †Megaglossoceras Miller et al. 1933

Fm. †Gonionautilidae Kummel 1950

G. †Gonionautilus Mojsisovics 1902

Fm. †Liroceratidae Miller and Youngquist 1949

G. †Alexandronautilus Shimanskiy 1962

G. †Bistrialites Turner 1954

G. †Coelogasteroceras Hyatt 1893

G. †Condraoceras Miller et al. 1947

G. †Hemiliroceras Ruzhentsev and Shimanskiy 1954

G. †Leniceras Leonova and Shchedukhin 2020

G. †Liroceras Teichert 1940

Invalid names: Coloceras [replaced]

G. †Paraliroceras Barskov and Shilovsky 2014

G. †Paranautilus Mojsisovics 1902

G. †Peripetoceras Hyatt 1894

G. †Perunautilus Crick and Sobolev 1994

G. †Potoceras Hyatt 1894

G. †Shikhanonautilus Leonova and Shchedukhin 2020

G. †Tomponautilus Sobolev 1989

Fm. †Siberionautilidae Popov 1951

G. †Siberionautilus Popov 1951

G. †Conchorhynchus de Blainville 1827

†Conchorhynchus cretaceus Fritsch 1897

†Conchorhynchus limburgicus Tuuk 1982

†Conchorhynchus robustus König 1920

G. †Danzikoceras

G. †Dasbergoceras

Fm. †Dentoceratidae Ruzhentsev and Shimanskiy 1954

G. †Dentoceras Ruzhentsev and Shimanskiy 1954

†Dentoceras belemnitiforme Flower 1964

†Dentoceras latum Ruzhentsev and Shimanskiy 1954

†Dentoceras magnum Ruzhentsev and Shimanskiy 1954

†Dentoceras ultuganense Ruzhentsev and Shimanskiy 1954

G. †Dzhinsetoceras

G. †Exoticeras Barskov and Shilovsky 2014

†Exoticeras exoticum Barskov and Shilovsky 2014

G. †Geitonoceras

G. †Grzegorzewskia

G. †Krykyloceras

G. †Kummeloceras Shimanskiy 1967

†Kummeloceras sibiricum Shimanskiy 1967

G. †Mahoningoceras

G. †Menuthionautlis Collignon 1933

Superfm. Nautiloidea de Blainville 1825

Fm. †Aturiidae Chapman 1857

G. †Aturia Bronn 1838

Fm. †Cenoceratidae Tinant and Kabamba 1983

G. †Cenoceras Hyatt 1884

G. †Digonioceras Hyatt 1894

G. †Heminautilus Spath 1927

Invalid names: Platynautilus Yabe and Ozaki 1953 [synonym], Vorticoceras Scott 1940 [synonym]

G. †Josanautilus Martínez and Grauges 2006

G. †Ophionautilus

G. †Pictonautilus Branger 2004

Fm. †Cymatoceratidae Spath 1927

G. †Cymatonautilus Spath 1927

G. †Neocymatoceras Kobayashi 1954

G. †Procymatoceras Spath 1927

G. †Syrionautilus Spath 1927

Fm. †Hercoglossidae Spath 1927

G. †Aturoidea Vredenburg 1925

Invalid names: Paraturia Spath 1927 [objective synonym]

G. †Cimomia Conrad 1866

Invalid names: Javanoceras Martin 1932 [synonym]

G. †Deltoidonautilus Spath 1927

Invalid names: Lissoniceras Benavides-Caceres 1956 [synonym]

G. †Hercoglossa Conrad 1866

Invalid names: Enclimatoceras Hyatt 1883 [synonym], Woodringia Stenzel 1940 [synonym]

G. †Teichertia Glenister et al. 1956

Fm. Nautilidae de Blainville 1825

G. Allonautilus Ward and Saunders 1997

G. †Anglonautilus Spath 1927

G. †Angulithes Montfort 1808

G. †Belmonticeras Rulleau 2008

G. †Carinonautilus Spengler 1910

G. †Cymatoceras Hyatt 1884

Invalid names: Eurocymatoceras Matsumoto 1983 [synonym]

G. †Deltocymatoceras Kummel 1956

G. †Epicymatoceras Kummel 1956

G. †Euciphoceras

G. †Eucymatoceras Spath 1927

G. †Eutrephoceras Hyatt 1894

G. †Kummelonautilus Matsumoto 1984

Invalid names: Kummeloceras Matsumoto 1983 [replaced]

G. †Ligeiceras Barroso-Barcenilla 2011

G. †Nautilopsis Conrad 1848

G. Nautilus Linnaeus 1758

G. †Paracymatoceras Spath 1927

G. †Pseudocenoceras Spath 1927

G. †Stenzeloceras Whetstone and Teichert 1978

G. †Strionautilus Shimanskiy 1951

Invalid names: Eutrephoceratidae Hyatt 1894 [synonym], Nautilinae de Blainville 1825 [empty], Nautilus fricator Beck 1835 [nomen nudum]

Fm. †Paracenoceratidae Spath 1927

G. †Aulacenoceras Tinant 1987

G. †Micronautilus Branger 2023

G. †Paracenoceras Spath 1927

G. †Somalinautilus Spath 1927

G. †Tithonoceras Retowski 1894

Fm. †Pseudonautilidae Shimansky and Erlanger 1955

G. †Aulaconautilus Spath 1927

G. †Palelialia

G. †Pseudaganides Spath 1927

Invalid names: Hercoglossoceras [synonym]

G. †Pseudaturoidea Shimansky 1975

G. †Pseudonautilus Meek 1876

G. †Xenocheilus Shimansky 1957

G. †Nautilorhynchus Fritsch 1910

†Nautilorhynchus simplex Fritsch 1872

Invalid names: Rhyncholithes bohemicus Till 1906 [synonym], Rhyncholithes curtus Till 1907 [synonym], Rhyncholithes curvatus Till 1907 [synonym], Rhyncholithes rectus Till 1907 [synonym]

G. †Neobistrialites

G. †Nikenautilus

†Nikenautilus beleuthensis Shimansky 1957

†Nikenautilus vultur Shimanskiy 1967

G. †Palaskensis

G. †Parachouteauoceras Niko and Ozawa 1997

Fm. †Paranautilidae Kummel 1953

G. †Indonautilus Mojsisovics 1902

†Indonautilus awadi Kummel 1960

†Indonautilus innocens Pérez-Valera et al. 2017

†Indonautilus kraffti Mojsisovics 1902

†Indonautilus privatus von Mojsisovics 1882

†Nautilus (Indonautilus) subbambanagensis Krumbeck 1913

G. †Picardiceras Parnes 1986

†Picardiceras multicameratus Gabb 1864

†Picardiceras picardi Parnes 1986

Fm. †Permonautilidae Barskov and Shilovsky 2014

G. †Nemdoceras Barskov and Shilovsky 2014

†Nemdoceras evolutum Barskov and Shilovsky 2014

†Nemdoceras kremeshkense Barskov and Shilovsky 2014

†Nemdoceras nemdense Barskov and Shilovsky 2014

G. †Permonautilus Kruglov 1933

†Permonautilus cornutus Golowinsky 1868

†Permonautilus halleri Tichy 1975

†Permonautilus kruglovi Barskov and Shilovsky 2014

†Permonautilus parapinegaensis Barskov and Shilovsky 2014

†Permonautilus pinegaensis Kruglov 1933

G. †Tatianautilus Barskov and Shilovsky 2014

†Tatianautilus leonovae Barskov and Shilovsky 2014

G. †Thyoceras Leonova and Shchedukhin 2020

†Thyoceras involutum Leonova and Shchedukhin 2020

G. †Piratoceras

Fm. †Pleuronautilidae Hyatt 1900

G. †Linonautilus Zhou 1979

†Linonautilus communis Zhou 1979

†Linonautilus nanus Zhou 1979

G. †Pseudocatastroboceras

G. †Pseudophacoceras

G. †Pseudostenopoceras Shimanskiy 1967

†Pseudostenopoceras lenticulare Shimanskiy 1967

†Pseudostenopoceras rouillieri Koninck 1878

†Pseudostenopoceras solare Shimanskiy 1967

G. †Pteronautilus Meek 1865

†Pteronautilus seebachianus Geinitz 1861

Subor. †Rutoceratina Flower and Kummel 1950

Superfm. †Rutocerataceae Hyatt 1884

Fm. †Neptunoceratidae Shimanskiy 1956

Fm. †Rutoceratidae Hyatt 1884

G. †Soakinautilus

Fm. †Syringonautilidae Mojsisovics 1902

G. †Clymenonautilus Hyatt in Zittel 1900

†Clymenonautilus ehrlichi von Mojsisovics 1873

G. †Juvavionautilus Mojsisovics 1902

†Juvavionautilus heterophyllus Hauer 1849

†Juvavionautilus subtrapezoidalis von Mojsisovics 1902

†Juvavionautilus trapezoidalis Hauer 1860

G. †Oxynautilus Mojsisovics 1902

†Oxynautilus acutus Hauer 1846

G. †Syringoceras Hyatt 1894

†Syringoceras altius von Mojsisovics 1902

†Syringoceras barrandei Hauer 1847

†Syringoceras breve Hauer 1860

†Syringoceras brevior von Mojsisovics 1873

†Syringoceras credneri von Mojsisovics 1902

†Syringoceras daubreeanum von Mojsisovics 1902

†Syringoceras eugyrum von Mojsisovics 1873

†Syringoceras evolutum von Mojsisovics 1873

†Syringoceras granulosostriatus Klipstein 1843

†Syringoceras nekuchanicum Sobolev 1998

†Syringoceras spurri Smith 1927

†Syringoceras zitteli von Mojsisovics 1902

G. †Syringonautilus Mojsisovics 1902

†Syringonautilus arcticus Sobolev 1998

†Syringonautilus bullatus von Mojsisovics 1873

†Syringonautilus lilianus von Mojsisovics 1882

†Syringonautilus nordenskjoldi Lindstrom 1885

†Syringonautilus spitiensis Stoliczka 1865

†Syringonautilus vagus Shimansky 1965

Subor. †Tainoceratina Shimansky 1964

Superfm. †Temnocheilaceae Mojsisovics 1902

Fm. †Temnocheilidae Mojsisovics 1902

Superfm. †Trigonoceratoidea Hyatt 1884

Fm. †Grypoceratidae Hyatt 1900

Fm. †Permoceratidae Miller and Collinson 1953

Fm. †Tainoceratidae Hyatt 1883

Invalid names: Gyroceratidae von Mojsisovics 1882 [synonym]

Fm. †Trigonoceratidae Hyatt 1884

Superfm. †Tainoceratoidea Hyatt 1883

Fm. †Gzheloceratidae Ruzhentsev and Shimanskiy 1954

G. †Celox Shimanskiy 1967

G. †Gzheloceras Ruzhentsev and Shimanskiy 1954

G. †Heurekoceras Ruzhentsev and Shimanskiy 1954

G. †Hunanoceras Zhao 1954

G. †Parametacoceras Miller and Owen 1934

Fm. †Koninckioceratidae Hyatt in Zittel 1900

G. †Edaphoceras Hyatt 1884

G. †Knightoceras Miller and Owen 1934

G. †Lophoceras Hyatt 1893

G. †Millkoninckioceras Kummel 1963

Invalid names: Koninckioceras Hyatt 1883 [replaced]

G. †Paravalhallites Shimanskiy 1990

G. †Subvestinautilus Turner 1954

G. †Tylodiscoceras Miller and Collinson 1950

G. †Valhallites

Fm. †Mosquoceratidae Ruzhentsev and Shimanskiy 1954

G. †Articheilus Ruzhentsev and Shimanskiy 1954

G. †Leonardocheilus Ruzhentsev and Shimanskiy 1954

G. †Mosquoceras Ruzhentsev and Shimanskiy 1954

Fm. †Rhiphaeoceratidae Ruzhentsev and Shimanskiy 1954

G. †Eximioceras Shchedukhin 2022

G. †Pararhiphaeoceras Ruzhentsev and Shimanskiy 1954

G. †Rhiphaeoceras Ruzhentsev and Shimanskiy 1954

G. †Rhiphaeonautilus Ruzhentsev and Shimanskiy 1954

G. †Sholakoceras Ruzhentsev and Shimanskiy 1954

Fm. †Tetragonoceratidae Flower 1945

G. †Nassauoceras Miller 1932

G. †Tetragonoceras Whiteaves 1891

G. †Wellsoceras Flower 1945

G. †Thaymastoceras

G. †Uloceras

G. †Vertorhizoceras

G. †Yakutionautilus

†Yakutionautilus angulatus Popov 1951

†Yakutionautilus kavalerovae Arkhipov and Barskov 1970

Invalid names: Bisiphytes Montfort 1808 [nomen vanum], Dentalium (Antalis) acumen de Koninck 1883 [nomen nudum], Nautilus delphinus Forbes 1846 [nomen dubium], Nautilus marcoui d'Orbigny 1850 [nomen dubium], Nautilus normannicus von Loesch 1914 [nomen nudum], Thrincoceratidae Ruzhentsev and Shimanskiy 1954 [empty]

Subcl. Nautiloidea Agassiz 1847 [nautiloid]

Subor. †Actinoceratina Flower 1950

Invalid names: Lambeoceratidae Flower 1957 [empty]

Subor. †Endoceratina Flower 1950

Invalid names: Cyrtovaginoceratidae Flower 1958 [empty]

Subor. †Orthochoanites Martin 1904

Invalid names: Ophioceratidae Arthaber [empty]

G. †Sueroceras Riccardi and Sabattini 1975

Invalid names: Ascoceratina Flower 1950 [empty], Barrandeoceratida Flower and Kummel, Jr. 1950 [empty], Basslerocerida Flower and Kummel, Jr. 1950 [empty], Discosorina Flower 1940 [empty], Eudoceratidae Hyatt 1883 [empty], Gyroceras de Koninck 1844 [invalid subgroup], Michelinoceratina Flower 1950 [empty], Oncoceratina Flower 1950 [empty], Tarphyceratina Flower 1950 [empty]

Subg. †Nautilus (Solenochilus) Meek and Worthen 1870

Subcl. †Orthoceratoidea M'Coy 1844

Or. †Actinocerida Teichert 1933

Fm. †Actinoceratidae Saeman 1853

G. †Actinoceras Bronn 1837

†Actinoceras abortivum Flower 1957

†Actinoceras aequale Flower 1957

†Actinoceras altopontense Foerste and Teichert 1930

†Actinoceras anticostiense Billings 1857

†Actinoceras arcuanotum Flower 1943

†Actinoceras carletonense Twenhofel 1928

†Actinoceras curdsvillense Foerste and Teichert 1930

†Actinoceras gradatum Flower 1957

†Actinoceras huronioides Flower 1957

†Actinoceras incantatum Flower 1957

†Actinoceras insulaenigrae Strand 1934

†Actinoceras kentuckiense Foerste and Teichert 1930

†Actinoceras lambei Foerste 1924

†Actinoceras lesperancei Holland and Copper 2008

†Actinoceras margaretae Flower 1957

†Actinoceras mutabile Flower 1957

†Actinoceras sinclairi Flower 1957

†Actinoceras winstoni Flower 1957

Invalid names: Metactinoceras [synonym]

G. †Ellinoceras Balashov 1960

G. †Elrodoceras Foerste 1924

†Elrodoceras blakei Foord 1888

†Elrodoceras indianense Miller 1892

G. †Floweroceras Miller and Youngquist 1947

G. †Kochoceras Troedsson 1926

†Kochoceras cuneiforme Troedsson 1926

Invalid names: Kochoceras troedssoni Roy 1941 [synonym]

G. †Leurorthoceras Foerste 1921

†Leurorthoceras hanseni Foerste 1921

G. †Paractinoceras Hyatt 1900

†Paractinoceras canadensis Whiteaves 1892

G. †Saffordoceras Foerste and Teichert 1930

G. †Troostoceras Foerste and Teichert 1930

Fm. †Armenoceratidae Troedsson 1926

G. †Armenoceras Foerste 1924

†Armenoceras australe Flower 1957

†Armenoceras barnesi Flower 1957

†Armenoceras callaghani Flower 1957

†Armenoceras chediforme Kobayashi 1958

†Armenoceras chicottense Foerste 1928

Invalid names: Armenoceras excentrale Foerste 1928 [synonym]

†Armenoceras cygneum Holland 1998

†Armenoceras hearsti Parks 1913

†Armenoceras holtedahli Strand 1934

†Armenoceras lenticontractum Flower 1957

†Armenoceras michaudae Bolton and Nowlan 1979

†Armenoceras nummularium de Sowerby and Murchison 1839

†Armenoceras raptor Billings 1866

†Armenoceras robsoni Whiteaves 1898

†Armenoceras subconicum d'Orbigny 1850

†Armenoceras vesperale Flower 1957

Invalid names: Helenites Zhuravleva 1962 [synonym], Tunguskoceras [synonym]

G. †Kailiceras Chen and Liu 1974

G. †Megadiscosorus Foerste 1925

†Megadiscosorus crassisegmentatus Foerste 1925

†Megadiscosorus inopinatus Foerste 1925

G. †Monocyrtoceras Foerste 1924

G. †Nybyoceras Troedsson 1926

†Nybyoceras balticum Troedsson 1926

†Nybyoceras bekkeri Troedsson 1926

†Nybyoceras cryptum Flower 1955

†Nybyoceras holmi Sweet 1958

†Nybyoceras intermedium Teichert 1930

†Nybyoceras montoyense Flower 1957

†Nybyoceras troedssoni Strand 1934

†Nybyoceras ulrichi Foerste and Teichert 1930

G. †Selkirkoceras Foerste 1929

†Selkirkoceras burnamense Flower 1957

†Selkirkoceras taepaekense Kobayashi 1977

G. †Stolbovoceras Balashov 1962

G. †Astoceras

G. †Calhounoceras Troedsson 1926

Fm. †Carbactinoceratidae Schindewolf 1943

G. †Aploceras d'Orbigny 1849

G. †Carbactinoceras Schindewolf 1935

G. †Rayonnoceras Croneis 1926

†Rayonnoceras cadyi Croneis 1926

†Rayonnoceras eccentricum Gordon 1964

†Rayonnoceras fayettevillense Croneis 1926

†Rayonnoceras irregulare Schwarzbach 1937

†Rayonnoceras nobile Meek and Worthen 1865

†Rayonnoceras protentum Gordon 1964

†Rayonnoceras solidiforme Croneis 1926

Invalid names: Rayonnoceras buffaloense Foerste and Teichert 1930 [synonym]

†Rayonnoceras vaughanianum Girty 1909

Invalid names: Rayonnoceras girtyi Foerste and Teichert 1930 [synonym]

G. †Eldroceras Foerste 1924

Fm. †Georginidae Wade 1977

G. †Georgina Wade 1977

G. †Mesaktoceras

Fm. †Gonioceratidae Hyatt 1884

G. †Gonioceras Hall 1847

†Gonioceras anceps Hall 1847

†Gonioceras brainerdi Flower 1957

†Gonioceras chaziense Ruedemann 1906

†Gonioceras minor Flower 1952

†Gonioceras multiseptatum Flower 1957

†Gonioceras obtusum Flower 1957

†Gonioceras pameliense Flower 1957

†Gonioceras paquettense Flower 1957

†Gonioceras quadratum Flower 1957

G. †Hoeloceras Sweet 1958

†Hoeloceras askeri Sweet 1958

†Hoeloceras helgoeyense Sweet 1958

†Hoeloceras muroni Kröger and Aubrechtova 2017

G. †Lambeoceras Foerste 1917

†Lambeoceras armstrongi Flower 1957

†Lambeoceras baffinense Miller et al. 1954

†Lambeoceras montrealense Flower 1952

†Lambeoceras nudum Troedsson 1928

†Lambeoceras rotundum Flower 1957

Fm. †Greenlandoceratidae Shimizu and Obata 1935

G. †Greenlandoceras Shimizu and Obata 1935

Invalid names: Greenlandoceras Shimizu and Obata 1935 [objective synonym]

G. †Pseudokionoceras

G. †Richmondoceras Frey 1995

†Richmondoceras brevicameratum Frey 1995

G. †Standardoceras

G. †Hopeioceras Shimuzu and Obata 1936

Fm. †Huroniidae Foerste and Teichert 1930

G. †Discoactinoceras Kobayashi 1927

G. †Huronia Stokes 1824

G. †Huroniella Foerste 1924

G. †Jeholoceras Kobayashi and Matumoto 1942

G. †Kobayashiceras Niko 1998

†Kobayashiceras gifuense Niko 1998

Fm. †Meitanoceratidae Kobayashi 1977

G. †Meitanoceras Chen and Liu 1974

†Meitanoceras subglobosum Chen and Liu 1974

G. †Pomphoceras Zou and Chen 1984

†Pomphoceras nyalamense Chen 1975

†Pomphoceras wuhaiense Zou and Chen 1984

Fm. †Ormoceratidae Saeman 1853

G. †Adamsoceras Flower 1957

†Adamsoceras holmi Troedsson 1926

†Adamsoceras isabelae Flower 1957

G. †Deiroceras Hyatt 1884

†Deiroceras curdsvillense Foerste and Teichert 1930

†Deiroceras hollardi Kröger 2008

†Deiroceras python Billings 1857

G. †Metarmenoceras Flower 1940

†Metarmenoceras bilaterale Flower 1940

†Metarmenoceras fatimae Kröger 2008

G. †Mstikhinoceras Shimanskiy 1961

G. †Ormoceras Stokes 1840

†Ormoceras bayfieldi Stokes 1840

†Ormoceras centrale Flower 1940

†Ormoceras champlainense Flower 1952

†Ormoceras dartoni Flower 1957

†Ormoceras ferecentricum Foerste. and Teichert 1930

†Ormoceras heckeri Teichert 1930

†Ormoceras kiaeri Sweet 1958

†Ormoceras neumani Flower 1957

†Ormoceras schohariae Flower 1940

Invalid names: Aluveroceras [synonym]

G. †Orthonybyoceras Shimizu and Obata 1935

†Orthonybyoceras covingtonense Foerste and Teichert 1930

†Orthonybyoceras dyeri Miller 1875

†Orthonybyoceras isakari Kröger and Aubrechtova 2017

†Orthonybyoceras moisense Kröger and Aubrechtova 2017

Invalid names: Siberioceras [synonym]

G. †Parormoceras Shimizu and Obata 1935

G. †Troedssonoceras Foerste 1928

G. †Parahelenites Chen and Liu 1974

†Parahelenites asymmetricus Stait 1988

†Parahelenites guizhouensis Chen and Liu 1974

Fm. †Parahelenitidae Chen et al. 1981

G. †Euryarthroceras Chen et al. 1981

G. †Eushantungoceras Shimizu and Obata 1935

Fm. †Polydesmiidae Kobayashi 1940

G. †Ordosoceras Chang 1959

G. †Polydesmia Lorenz 1906

†Polydesmia zuezshanensis Chang 1959

Fm. †Pseudactinoceratidae Schindewolf 1943

G. †Linteroceras Mironenko 2023

†Linteroceras deflexum Trautschold 1867

†Linteroceras incommoda Shimansky 1968

Invalid names: Linter Shimansky 1968 [replaced]

Fm. †Ruedemannoceratidae Flower 1940

G. †Elkanoceras Flower 1971

†Elkanoceras pluto Billings 1865

G. †Franklinoceras Flower 1957

G. †Madiganella Teichert and Glenister 1952

†Madiganella magna Teichert and Glenister 1952

G. †Ruedemannoceras Flower 1940

†Ruedemannoceras stonense Safford 1869

G. †Subtofangoceras Shimuzu and Obata 1936

Fm. †Wutinoceratidae Shimizu and Obata 1935

G. †Cyrtonybyoceras Teichert 1933

G. †Mesowutinoceras Chen 1976

G. †Wutinoceras Shimizu and Obata 1935

†Wutinoceras multitubiculatum Teichert and Glenister 1953

G. †Zerashanoceras

Invalid names: Gouldoceratidae Stait 1984 [empty]

Or. †Dissidocerida Zhuravleva 1964

Fm. †Bajkaloceratidae Balashov 1960

G. †Bajkaloceras Balashov 1960

Superfm. †Dissidocerataceae Zhuravleva 1964

Fm. †Cyptendoceratidae Zhuravleva 1994

G. †Amsleroceras Hook and Flower 1977

G. †Veneficoceras Hook and Flower 1977

Fm. †Dissidoceratidae Zhuravleva 1964

G. †Balashovoceras Kiselev 1990

G. †Dissidoceras Zhuravleva 1964

Fm. †Orthodochmioceratidae Chen et al. 1981

G. †Actinodochmioceras Chen 1981

G. †Orthodochmioceras Chen et al. 1981

Fm. †Geisonoceratidae Zhuravleva 1959

G. †Angeisonoceras Kröger 2008

†Angeisonoceras consocium Barrande 1870

†Angeisonoceras davidsoni Barrande 1870

†Angeisonoceras festians Barrande 1870

†Angeisonoceras imminutum Barrande 1870

†Angeisonoceras inchoatum Barrande 1868

†Angeisonoceras libens Barrande 1870

†Angeisonoceras limatum Barrande 1870

†Angeisonoceras reteornatum Kröger 2008

†Angeisonoceras squamatulum Barrande 1868

G. †Columenoceras Barskov 1960

G. †Geisonoceras Hyatt 1884

†Geisonoceras heintzi Strand 1934

†Geisonoceras kureikense Zhuraleva 1964

†Geisonoceras maclareni Murchison 1859

†Geisonoceras shumardi Billings 1859

†Geisonoceras wegelini Teichert 1930

G. †Geisonocerina

G. †Harrisoceras Flower 1939

G. †Joachimoceras Barskov 1960

G. †Jonesoceras Barskov 1960

G. †Nilssonoceras Kröger 2004

†Nilssonoceras nilssoni Kröger 2004

G. †Ordogeisonoceras Frey 1995

†Ordogeisonoceras amplicameratum Hall 1847

Invalid names: Michelinoceras ludlowense Miller and Faber 1894 [synonym]

†Ordogeisonoceras foerstei Strand 1934

†Ordogeisonoceras tartuensis Kröger and Aubrechtova 2017

†Ordogeisonoceras uppsalaensis Kröger and Aubrechtová 2019

G. †Protokionoceras Grabau and Shimer 1910

†Protokionoceras fessicancellatum Kobayashi et al. 1984

†Protokionoceras strandi Troedsson 1932

G. †Striacoceras Flower 1936

G. †Temperoceras Barskov 1960

†Temperoceras aequinudum Kröger 2008

†Temperoceras ludense Sowerby 1839

Invalid names: Orthoceras dahlii Barrande 1870 [synonym], Orthoceras omnium Barrande 1868 [synonym], Orthoceras temperans Barrande 1867 [synonym]

†Temperoceras migrans Barrande 1868

†Temperoceras nudum Barrande 1870

G. †Ugooloceras Evans 1996

†Ugooloceras oblatum Evans 1996

G. †Virgoceras Flower 1939

†Virgoceras politum M'Coy 1851

Fm. †Intejoceratidae Balashov 1960

G. †Evencoceras Balashov 1960

G. †Intejoceras Balashov 1960

Fm. †Polymeridae Evans 2005

G. †Polymeres Murchison 1839

†Polymeres demetarum Murchison 1839

Invalid names: Orthoceras eoum Blake 1882 [synonym]

Fm. †Rangeroceratidae Evans 2005

G. †Anrangeroceras Kröger and Landing 2009

†Anrangeroceras repens Billings 1856

†Anrangeroceras whitehallense Kröger and Landing 2009

G. †Cyclorangeroceras Evans 2005

†Cyclorangeroceras blakei Evans 2005

G. †Rangeroceras Hook and Flower 1977

†Rangeroceras hintzei Hook and Flower 1977

Superfm. †Troedssonellaceae Kobayashi 1935

Fm. †Narthecoceratidae Flower 1958

G. †Donacoceras Foerste 1925

G. †Farroceras Flower 1968

G. †Narthecoceras Hyatt 1895

Subfm. †Narthecoceratinae Flower 1958

Invalid names: Donacoceratinae Flower 1968 [empty]

Fm. †Troedssonellidae Kobayashi 1935

G. †Buttsoceras Ulrich and Foerste 1933

†Buttsoceras adamsi Butts 1926

†Buttsoceras atticus Billings 1865

†Buttsoceras novemexicanum Flower 1962

†Buttsoceras odenvillense Ulrich et al. 1944

†Buttsoceras vandiverense Ulrich et al. 1944

†Buttsoceras williamsi Flower 1962

G. †Cyclobuttsoceras Chen 1976

G. †Moridunoceras Evans 2005

†Moridunoceras castelli Evans 2005

G. †Oxfordoceras Ulrich et al. 1944

†Oxfordoceras atticus Billings 1865

†Oxfordoceras billingsi Ulrich et al. 1944

G. †Sheshanoceras Chen 1984

G. †Tajaroceras Hook and Flower 1976

†Tajaroceras wardae Hook and Flower 1976

G. †Thoraloceras Kröger and Evans 2011

†Thoraloceras bactritoides Kröger and Evans 2011

G. †Troedssonella Kobayashi 1935

Or. †Lituitida Starobogatov 1983

Fm. †Lamellorthoceratidae Teichert 1961

G. †Arthrophyllum Beyrich 1850

†Arthrophyllum crassus Roemer 1844

†Arthrophyllum vermiculare Termier and Termier 1950

Invalid names: Lamellorthoceras Termier and Termier 1950 [synonym]

G. †Gorgonoceras Zhuravleva 1961

Fm. †Lituitidae Philips 1848

G. †Ancistroceras Remele 1881

†Ancistroceras undulatum Boll 1857

G. †Angelinoceras Hyatt 1894

†Angelinoceras latus Angelin 1880

G. †Bodoceras Frye 1982

†Bodoceras torticoni Frye 1982

G. †Cyclolituites Remelé 1886

†Cyclolituites americanus Hyatt 1894

†Cyclolituites applanatus Remele 1880

†Cyclolituites kjerulfi Sweet 1958

†Cyclolituites lynnensis Kjerulf 1865

G. †Holmiceras Hyatt 1894

†Holmiceras coreanicum Kobayashi 1927

†Holmiceras kjaerulfi Brogger 1882

†Holmiceras kjerulfi Brogger 1882

†Holmiceras praecurrens Holm 1891

Invalid names: Sigmorthoceras Kobayashi 1934 [synonym]

G. †Lituites Bertrand 1763

†Lituites angulatus Saemann 1852

†Lituites imperfectum Wahlenberg 1821

†Lituites kjerulfi Brogger 1882

†Lituites lituus Montfort 1808

†Lituites perfectus Wahlenberg 1818

G. †Trilacinoceras Sweet 1958

†Trilacinoceras discors Holm 1891

†Trilacinoceras norvegicum Sweet 1958

Fm. †Sinoceratidae Shimizu and Obata 1935

G. †Rhynchorthoceras Remelé 1882

†Rhynchorthoceras angelini Boll 1857

†Rhynchorthoceras beyrichi Remele 1882

†Rhynchorthoceras densum Qi 1980

†Rhynchorthoceras helgoeyense Sweet 1958

†Rhynchorthoceras minor Kröger et al. 2007

†Rhynchorthoceras subcurvatum Qi 1980

Invalid names: Rhynchoceras Remele 1881 [replaced]

G. †Tyrioceras Strand 1933

†Tyrioceras kjaerulfi Strand 1934

†Tyrioceras kjerulfi Strand 1934

†Tyrioceras warburgae Frye 1982

Fm. †Sphooceratidae Flower 1962

G. †Sphooceras Flower 1962

†Sphooceras truncatum Barrande 1860

Fm. †Offleyoceratidae Flower 1962

G. †Offleyoceras Foerste 1928

Or. †Orthocerida Kuhn 1940

G. †Acrosphaerorthoceras

G. †Aptychopsis Barrande 1872

†Aptychopsis angulatum Jones and Woodward 1892

†Aptychopsis ovata Jones and Woodward 1888

†Aptychopsis prima Barrande 1872

†Aptychopsis salteri Woodward 1882

Fm. †Arionoceratidae Dzik 1984

G. †Adiagoceras Kröger 2008

†Adiagoceras subnotatum Barrande 1868

†Adiagoceras taouzense Kröger 2008

G. †Arionoceras Barskov 1966

†Arionoceras canonicum Meneghini 1843

Invalid names: Arionoceras affine Meneghini 1857 [synonym], Orthoceras arion Barrande 1866 [synonym]

†Arionoceras capillosum Barrande 1868

†Arionoceras densiseptum Kobayashi et al. 1984

G. †Parakionoceras Foerste 1928

†Parakionoceras originale Barrande 1868

†Parakionoceras yanjinense Chen et al. 1981

†Parakionoceras yinjiangense Chen et al. 1981

G. †Arterioceras

G. †Badouceras

Fm. †Baltoceratidae Kobayashi 1935

G. †Annbactroceras Kröger and Evans 2011

†Annbactroceras felinense Kröger and Evans 2011

†Annbactroceras martyi Thoral 1935

G. †Bactroceras Holm 1898

†Bactroceras angustisiphonatum Rüdiger 1891

Invalid names: Bactroceras guichiense Ying 1989 [synonym], Bactroceras jingshanlingense Zou 1987 [synonym], Bactroceras latisiphonatum Glenister 1952 [synonym], Bactroceras wilsoni Flower 1968 [synonym], Irianoceras antiquum Kobayashi and Burton 1971 [synonym]

†Bactroceras avus Holm 1898

†Bactroceras gossei Etheridge 1893

†Bactroceras mourguesi Thoral 1935

†Bactroceras sandbergeri Barrande 1867

Invalid names: Tretoceras parvulum Barrande 1868 [synonym]

Invalid names: Eobactrites Schindewolf 1932 [synonym]

G. †Belloceras

G. †Castelloceras Evans 2005

†Castelloceras arennigense Evans 2005

G. †Cochlioceras Eichwald 1860

†Cochlioceras avus Eichwald 1860

Invalid names: Cochlioceras sinense Chang 1957 [synonym]

Invalid names: Baltoceras Holm 1897 [synonym]

G. †Cyrtobaltoceras Flower 1964

†Cyrtobaltoceras gracile Flower 1964

G. †Endorioceras Flower 1964

†Endorioceras rarum Flower 1964

G. †Eosomichelinoceras Chen 1974

†Eosomichelinoceras baldisii Kröger et al. 2007

†Eosomichelinoceras huananense Chen 1974

G. †Hedstroemoceras Foerste 1930

†Hedstroemoceras haelluddense Foerste 1930

G. †Metabaltoceras Flower 1964

†Metabaltoceras fusiforme Flower 1964

†Metabaltoceras minutum Flower 1964

G. †Microbaltoceras Flower 1964

†Microbaltoceras minore Flower 1964

G. †Ogygoceras

†Ogygoceras gracile Ulrich et al. 1944

G. †Rhabdiferoceras Flower 1964

†Rhabdiferoceras annuliferum Flower 1964

†Rhabdiferoceras pertinens Blake 1882

†Rhabdiferoceras planiseptatum Hook and Flower 1977

Invalid names: Rhabdiferoceras floweri Zhuravleva 1994 [invalid subgroup]

G. †Rhabdiferous

G. †Semiannuloceras Evans 2005

†Semiannuloceras abbeyense Evans 2005

G. †Sinocochleoceras Qi 1980

G. †Bogoslovskya

Fm. †Brachycycloceratidae Furnish et al. 1964

G. †Brachycycloceras Miller et al. 1933

†Brachycycloceras curtum Meek and Worthen 1860

†Brachycycloceras cyclophorum Waagen 1879

†Brachycycloceras normale Miller et al. 1955

†Brachycycloceras rustaqense Niko et al. 1996

†Brachycycloceras washingtonense Gordon 1964

G. †Chicagooceras Foerste and Savage 1927

G. †Cornuella Shimansky 1968

G. †Cryptocycloceras

G. †Cycloceras M'Coy 1844

†Cycloceras hsiangtanense Zhao 1954

†Cycloceras laevigatum M'Coy 1844

†Cycloceras olorus Hall 1879

†Cycloceras waageni Kittl 1903

Invalid names: Perigrammoceras Foerste 1924 [synonym]

G. Dictyoceras Eichwald 1860

G. †Esopoceras

G. †Folioceras

G. †Garryoceras Foerste 1928

G. †Heloceras Eichwald 1860

G. †Jangziceras Lai 1964

G. †Joldagiroceras Miagkova 1967

†Joldagiroceras gyratum Miagkova 1967

G. †Kentronites Zhuravelva 1964

Invalid names: Tambegiroceras Miagkova 1967 [synonym]

Fm. †Kionoceratidae Hyatt 1900

G. †Kionoceras Hyatt 1884

†Kionoceras coralliforme M'Coy 1846

†Kionoceras decorahense Flower 1952

†Kionoceras densum Chen et al. 1981

†Kionoceras diebuense Chen et al. 1981

†Kionoceras doricum Barrande 1868

†Kionoceras erraticum Flower 1952

†Kionoceras heshuiense Chen et al. 1981

†Kionoceras infrequens Flower 1952

†Kionoceras laqueatum Hall 1847

†Kionoceras liaojiaoshanense Chen et al. 1981

†Kionoceras magnisulcatum Billings 1857

†Kionoceras modicum Chen et al. 1981

†Kionoceras muyagirum Miagkova 1967

†Kionoceras polyplicatum Flower 1952

†Kionoceras serenum Shimanskiy 1954

†Kionoceras styliforme Chen et al. 1981

†Kionoceras valcourense Flower 1952

†Kionoceras virgatum de Sowerby and Murchison 1839

Invalid names: Kionoceras bellatulum Billings 1866 [synonym], Kionoceras canaliculatum de Sowerby and Murchison 1839 [synonym]

G. †Nothokionoceras Chen et al. 1981

†Nothokionoceras leijiatunense Chen et al. 1981

G. †Ohioceras Shimizu and Obata 1935

†Ohioceras annulum Chen et al. 1981

G. †Polygrammoceras Foerste 1927

†Polygrammoceras chicottense Foerste 1928

†Polygrammoceras ellisense Foerste 1928

G. †Thoracoceras Fischer de Waldheim 1844

G. †Loxoceras M'Coy 1844

Invalid names: Breynioceras Foerste 1930 [objective synonym]

G. †Mericoceras

G. †Molossus deMontfort 1808

G. †Murchisoniceras

G. †Naivs

G. †Nebroceras

G. †Neorthoceras Shimizu and Obata 1936

Fm. †Orthoceratidae M'Coy 1844

G. †Aethiosolen Flower 1968

Subfm. †Anaspyroceratinae Chen et al. 1981

G. †Calorthoceras Chen et al. 1981

G. †Chebbioceras Klug et al. 2008

†Chebbioceras erfoudense Klug et al. 2008

G. †Ctenoceras Noetling 1884

†Ctenoceras schmidti Noetling 1884

†Ctenoceras sweeti Kröger and Isakar 2006

†Ctenoceras verticillatum Krause 1844

G. †Infundibuloceras Klug et al. 2008

†Infundibuloceras brevimira Klug et al. 2008

†Infundibuloceras komiense Zhuravleva 1978

†Infundibuloceras longicameratum Kröger 2008

†Infundibuloceras mira Zhuravleva 1978

†Infundibuloceras mohamadi Kröger 2008

G. †Kopaninoceras Kiselev 1969

†Kopaninoceras dorsatoides Kröger 2008

†Kopaninoceras jucundum Barrande 1870

†Kopaninoceras thyrsus Barrande 1870

†Michelinoceras (Kopaninoceras) ninglangense Chen et al. 1981

Subfm. †Leurocycloceratinae Sweet 1964

G. †Bohemites

G. †Euthyocycloceras Chen et al. 1981

G. †Leurocycloceras Foerste 1928

G. †Obliocycloceras Chen et al. 1981

G. †Obliocycloceroides Chen et al. 1981

G. †Xiaoxiangoceras Chen et al. 1981

G. †Merocycloceras Ristedt 1968

†Merocycloceras declivis Ristedt 1968

G. †Michelinoceras Foerste 1932

†Michelinoceras alticameratum Kobayashi et al. 1984

†Michelinoceras avelinii Salter 1854

Invalid names: Orthoceras caereesiense Hicks 1875 [synonym]

†Michelinoceras currens Barrande 1866

†Michelinoceras floridaense Hook and Flower 1977

†Michelinoceras guadalupense Girty 1909

†Michelinoceras melleni Hook and Flower 1977

†Michelinoceras michelini Barrande 1866

†Michelinoceras mizobuchii Kobayashi et al. 1984

†Michelinoceras palatum Shimanskiy 1996

†Michelinoceras primum Flower 1962

†Michelinoceras richardsi Flower 1962

†Michelinoceras vandiverense Ulrich et al. 1944

†Michelinoceras wapanuckense Girty 1909

Subfm. †Michelinoceratinae Flower 1945

G. †Acanthomichelinoceras Kröger et al. 2005

G. †Arkonoceras Flower 1945

G. †Balticoceras Teichert 1940

G. †Hesperoceras Miller and Youngquist 1947

G. †Imbricatoceras Holland 1992

G. †Pedanochonoceras Chen et al. 1981

G. †Sinoceras Shimizu and Obata 1935

G. †Orthoceras Breynius 1832

†Orthoceras annulata Sowerby 1818

†Orthoceras bisignatum Barrande 1877

†Orthoceras burgense Gemmellaro 1889

†Orthoceras decrescens de Koninck 1863

†Orthoceras dominans de Gregorio 1930

†Orthoceras elegantulum Gemmellaro 1889

†Orthoceras eurekensis Walcott 1884

†Orthoceras expansum Blake 1882

†Orthoceras fluminense Meneghini 1857

Invalid names: Orthoceras bohemicum Barrande 1866 [synonym]

†Orthoceras geinitzi d'Orbigny 1850

†Orthoceras gradatum Gemmellaro 1889

†Orthoceras hulli Gemmellaro 1889

†Orthoceras kingii Meek 1877

†Orthoceras lentum Ruedemann 1906

†Orthoceras lepton Gemmellaro 1889

†Orthoceras luhai Stumbur 1956

†Orthoceras margaritatum Abich 1878

†Orthoceras modestum Ruedemann 1906

†Orthoceras oehlerti Gemmellaro 1889

†Orthoceras orientale Fliegel 1901

†Orthoceras progressum Ruedemann 1906

†Orthoceras punjabiense Waagen 1879

†Orthoceras rachidium de Koninck 1863

†Orthoceras randolphensis Worthen 1882

†Orthoceras siculum Gemmellaro 1889

†Orthoceras spissiseptum Dwight 1884

†Orthoceras submoniliforme Meneghini 1857

†Orthoceras subtriangulare Gemmellaro 1889

†Orthoceras transversum Abich 1878

†Orthoceras turritellum Abich 1878

†Orthoceras vagum Ruedemann 1906

†Orthoceras vesiculosum de Koninck 1863

†Orthoceras waageni Gemmellaro 1889

Invalid names: Orthoceratites Lamarck 1799 [nomen nudum], Orthoceros Brünnich 1771 [objective synonym]

Subfm. †Orthoceratinae McCoy 1844

G. †Bifoveoceras Balashov 1956

G. †Orthocycloceras Barskov 1972

†Orthocycloceras gomiense Kobayashi et al. 1984

†Orthocycloceras tafilaltense Kröger 2008

G. †Palorthoceras Kröger et al. 2007

†Palorthoceras buttsi Flower 1962

†Palorthoceras kayseri Kröger et al. 2007

G. †Pleurorthoceras Flower 1962

†Pleurorthoceras clarksvillense Foerste 1924

†Pleurorthoceras organi Kröger and Aubrechtova 2017

†Pleurorthoceras osmundsbergense Kröger 2013

†Pleurorthoceras selkirkense Whiteaves 1892

G. †Pojetoceras Frey 1995

†Pojetoceras floweri Frey 1995

G. †Pseudospyroceras Kröger 2008

†Pseudospyroceras reticulum Kröger 2008

G. †Striatocycloceras Kröger and Isakar 2006

†Striatocycloceras foerstei Teichert 1930

†Striatocycloceras isbergi Kröger 2013

†Striatocycloceras obliquum d'Eichwald 1860

†Striatocycloceras romingeri Foerste 1932

†Striatocycloceras undulostriatum Hall 1847

G. †Theoceras Kröger 2008

†Theoceras filondouzense Kröger 2008

G. †Tibichoanoceras Kröger 2008

†Tibichoanoceras abditum Balashov and Kiselev 1968

†Tibichoanoceras riphaeum Zhuravleva 1978

†Tibichoanoceras tibichoanum Kröger 2008

G. †Tienoceras Zhao 1954

†Tienoceras lenticulare Zhao 1954

Invalid names: Orthocerotidae Miller and Teichert 1936 [synonym], Prohypogeophis Marcus 1945 [nomen dubium], Prohypogeophis tunariensis Marcus 1945 [nomen dubium]

Subor. †Orthoceratina Dzik 1984

Fm. †Dawsonoceratidae Flower 1962

G. †Anaspyroceras Shimizu and Obata 1935

G. †Calocyrtocerina Chen 1981

G. †Dawsonoceras Hyatt 1884

Invalid names: Cedarvilleoceras [synonym]

G. †Dawsonocerina Horny 1956

G. †Metaspyroceras Foerste 1932

G. †Palaeodawsonocerina Kröger and Isakar 2006

Fm. †Eriditidae Chen in Chen et al 1981

G. †Allanoceras Barskov 1959

G. †Eridites Zhuravleva 1961

G. †Euvirgoceras Chen 1974

G. †Haloites Chen et al. 1981

G. †Malgaoceras Miagkova 1967

G. †Nathorstoceras Kröger 2013

G. †Paradnatoceras

G. †Paramooreoceras

G. †Plicatoceras

G. †Podoliceras

Fm. †Proteoceratidae Flower 1962

G. †Archigeisonoceras Chen 1984

G. †Baykonuroceras Barskov 1972

G. †Clothoceras Kröger and Aubrechtová 2019

†Clothoceras thornquisti Kröger and Aubrechtová 2019

G. †Cyrtactinoceras Hyatt in Zittel 1900

†Cyrtactinoceras boycii Whitfield 1886

†Cyrtactinoceras champlainense Ruedemann 1906

G. †Ephippiorthoceras Foerste 1924

†Ephippiorthoceras dowlingi Foerste and Savage 1927

Invalid names: Ephippiorthoceras modestum Troedsson 1928 [synonym]

†Ephippiorthoceras frognoeyense Strand 1934

†Ephippiorthoceras frognoyense Strand 1934

†Ephippiorthoceras plicatuloides Strand 1934

G. †Euorthoceras Foerste 1893

G. †Gangshanoceras Zou 1988

†Gangshanoceras densum Zou 1988

†Gangshanoceras guichinense Ying 1989

†Gangshanoceras jurongense Zou 1988

†Gangshanoceras villicumense Kröger et al. 2007

†Gangshanoceras wennanense Ying 1989

G. †Gorbyoceras Shimizu and Obata 1935

†Gorbyoceras alternestriatum Strand 1934

†Gorbyoceras clathroannulatum Roemer 1861

†Gorbyoceras gorbyi Miller 1894

†Gorbyoceras gracile Portlock 1843

†Gorbyoceras hammelli Foerste 1910

†Gorbyoceras tetreauense Wilson 1961

†Gorbyoceras textumaraneum Roemer 1861

Invalid names: Hammelloceras Shimizu and Obata 1935 [synonym]

G. †Isorthoceras Flower 1962

†Isorthoceras albersi Miller and Faber 1894

†Isorthoceras angelini Kröger 2013

†Isorthoceras cavi Kröger and Aubrechtova 2017

†Isorthoceras curvilineatum Kröger 2013

†Isorthoceras dalecarlense Kröger et al. 2011

†Isorthoceras elongatocinctum Portlock 1843

†Isorthoceras heintzi Strand 1934

†Isorthoceras heroyense Strand 1934

†Isorthoceras hudsonicum Ruedemann 1912

†Isorthoceras junceum Hall 1877

†Isorthoceras maris Kröger and Aubrechtova 2017

†Isorthoceras nikwis Kröger and Aubrechtová 2019

†Isorthoceras padisense Kröger and Aubrechtova 2017

†Isorthoceras rogersensis Foerste 1914

Invalid names: Treptoceras praenuntium Flower 1942 [synonym]

†Isorthoceras sociale Hall in Miller 1877

†Isorthoceras strigatum Hall 1847

†Isorthoceras suave Angelin and Lindström 1880

†Isorthoceras subcostatum Portlock 1843

†Isorthoceras sylphide Kröger and Aubrechtová 2019

†Isorthoceras urdr Kröger and Aubrechtová 2019

†Isorthoceras vexilli Kröger and Aubrechtova 2017

†Isorthoceras wahlenbergi Niko 2007

G. †Liulinoceras Zou and Chen 1984

G. †Mesnaquaceras Flower 1955

†Mesnaquaceras curviseptatum Flower 1955

G. †Metephippiorthoceras Zhuravleva 1957

G. †Monomuchites Wilson 1961

†Monomuchites annularis Frey 1995

†Monomuchites costalis Wilson 1961

†Monomuchites obliquum Frey 1995

G. †Paraproteoceras Chen 1981

G. †Proteoceras Flower 1955

†Proteoceras moniliforme Hall 1847

†Proteoceras perkinsi Ruedemann 1906

†Proteoceras pulchrum Flower 1955

†Proteoceras tyronensis Foerste 1912

Invalid names: Sactoceras josephianum Foerste 1933 [synonym]

G. †Pseudeskimoceras Shimizu and Obata 1936

G. †Pseudoliolinoceras Zou and Chen 1984

G. †Stereospyroceras Flower 1955

†Stereospyroceras champlainense Flower 1955

†Stereospyroceras clintoni Miller 1877

G. †Tofangoceras Kobayashi 1927

Invalid names: Kogenoceras Shimizu and Obata 1936 [synonym], Tofangocerina Sweet 1964 [synonym]

G. †Transorthoceras Kröger et al. 2011

†Transorthoceras osmundsbergense Kröger et al. 2011

G. †Treptoceras Flower 1942

†Treptoceras cincinnatiensis Miller 1875

†Treptoceras duseri Hall and Whitfield 1875

†Treptoceras fosteri Miller 1875

†Treptoceras transversum Miller 1875

Invalid names: Orthoceras hindei James 1878 [synonym]

†Treptoceras yokoyamai Kobayashi 1927

G. †Ulmioceras Zhuravleva 1990

Invalid names: Hammelloceratidae Shimizu and Obata 1936 [synonym]

Superfm. †Pseudorthocerataceae Sweet 1964

Fm. †Cyrtactinoceratidae Chen et al. 1981

G. †Armenocerina Chen et al. 1981

G. †Heyuncunoceras Chen et al. 1981

G. †Platysmoceras Chen et al. 1981

Fm. †Mysterioceratidae Sweet 1964

G. †Mysterioceras Teichert and Glenister 1953

Fm. †Songkanocerasidae Chen et al. 1981

G. †Songkanoceras Chen et al. 1981

Fm. †Stereoplasmoceratidae Kobayashi 1934

G. †Stereoplasmoceras Grabau 1922

G. †Stereoplasmocerina Kobayashi 1936

Superfm. †Pseudorthoceratoidea Flower and Caster 1935

Fm. †Sactoceratidae Troedsson 1926

G. †Sactoceras Hyatt 1884

G. †Pythonoceras

G. †Rhabdites

G. †Rhipsites

Fm. †Sactorthoceratidae Flower 1946

G. †Braulioceras Kröger et al. 2007

†Braulioceras sanjuanense Kröger et al. 2007

G. †Cartersoceras Flower 1964

†Cartersoceras noveboracense Flower 1952

†Cartersoceras popei Frey 1995

†Cartersoceras shideleri Flower 1964

G. †Centroonoceras Kobayashi 1934

†Centroonoceras tokunagai Kobayashi 1927

G. †Glenisteroceras Flower 1957

†Glenisteroceras obscurum Flower and Teichert 1957

G. †Leptoplatophrenoceras Chen and Zou 1984

G. †Murrayoceras Foerste 1926

†Murrayoceras murrayi Billings 1857

†Murrayoceras primum Flower 1955

G. †Sactorthoceras Kobayashi 1934

†Sactorthoceras banestanensis Dastanpour et al. 2006

†Sactorthoceras gonioseptum Kobayashi 1934

†Sactorthoceras makkolense Kobayashi 1927

Invalid names: Cycloceras taihakuense Kobayashi 1934 [synonym], Kawasakiceras densistriatum Kobayashi 1934 [synonym], Sactorthoceras shimamurai Kobayashi 1934 [synonym], Sigmorthoceras sigmoidale Kobayashi 1934 [synonym]

Invalid names: Kawasakiceras Kobayashi 1934 [synonym]

G. †Scipioceras Zhuravleva 1964

G. †Sigmocycloceras Kobayashi 1934

G. †Wennanoceras Chen 1976

G. †Wolungoceras Kobayashi 1931

G. †Sannionites deWaldheim 1829

G. †Sichuanaceras

Fm. †Sichuanoceratidae Zhuravleva 1978

G. †Neosichuanoceras Chen et al. 1981

G. †Sichuanoceras Chang 1962

†Sichuanoceras quizhouense Chang 1962

†Sichuanoceras zizense Kröger 2008

Fm. †Sphaerorthoceratidae Ristedt 1968

G. †Akrosphaeorthoceras Ristedt 1968

†Akrosphaeorthoceras gregalis Ristedt 1968

G. †Akrosphaerorthoceras Ristedt 1968

†Akrosphaerorthoceras gregalis Ristedt 1968

G. †Hemicosmorthoceras Ristedt 1968

†Hemicosmorthoceras aichae Kröger 2008

†Hemicosmorthoceras dimidiatum Sowerby in Murchinson 1839

†Hemicosmorthoceras laterculum Ristedt 1968

†Hemicosmorthoceras semimbricatum Gnoli 1982

G. †Iwakiella Hatai et al. 1972

†Iwakiella ichiroi Hatai et al. 1972

G. †Parasphaerorthoceras Ristedt 1968

†Parasphaerorthoceras accuratum Ristedt 1968

G. †Plagiostomoceras Teichert and Glenister 1952

†Plagiostomoceras angustum Holzapfel 1885

†Plagiostomoceras bifrons Barrande 1866

†Plagiostomoceras culter Barrande 1866

†Plagiostomoceras gruenwaldti Barrande 1866

†Plagiostomoceras lategruenwaldti Kröger 2008

†Plagiostomoceras placidum Barrande 1868

†Plagiostomoceras pleurotomum Barrande 1874

†Plagiostomoceras reticulatum Kröger 2008

†Plagiostomoceras thomasi Teichert and Glenister 1952

G. †Sphaerorthoceras Ristedt 1968

†Sphaerorthoceras beatum Ristedt 1968

G. †Subspyroceras Shimizu and Obata 1935

G. †Tartaroceras

G. †Tretoceras Salter 1958

Fm. †Tripteroceratidae Flower 1941

G. †Allumettoceras Foerste 1926

†Allumettoceras courtownense Evans 1994

†Allumettoceras giganteum Flower 1947

†Allumettoceras mjoesense Sweet 1958

†Allumettoceras oneratum Evans 1994

†Allumettoceras pauquettense Foerste 1924

†Allumettoceras tenerum Billings 1860

G. †Eotripteroceras Flower 1943

†Eotripteroceras minutum Flower 1943

G. †Hadoceras Strand 1934

†Hadoceras septocurvatum Strand 1934

G. †Mucteoceras Miagkova 1967

†Mucteoceras bilobatum Miagkova 1967

G. †Rasmussenoceras Foerste 1932

†Rasmussenoceras leveannulatum Troedsson 1926

G. †Tripteroceras Hyatt 1884

Subg. †Tripteroceras (Lambeoceras) Foerste 1917

†Tripteroceras cariniferum Flower 1952

†Tripteroceras problematicum Sweet 1958

G. †Tripterocerina Foerste 1935

G. †Zeehanoceras Stait 1982

†Zeehanoceras teicherti Stait 1982

G. †Trispectes

G. †Uralharuspex Ceccolini and Cianferoni 2023

†Uralharuspex latisiphonatus Shimansky 1968

Invalid names: Haruspex [replaced]

G. †Vericeras

G. †Zhuralevia

Invalid names: Michelinoceratida Flower and Kummel 1950 [synonym], Orthodochmiocerataceae Chen et al. 1981 [empty], Sinoceratida Kobayashi 1958 [synonym], Sphaerortoceratidae Ristedt 1968 [empty]

Fm. †Paraphragmitidae Flower 1950

G. †Calocyrtoceras Foerste 1936

G. †Cyrtocycloceras Foerste 1936

G. †Gaspocyrtoceras Foerste 1936

†Gaspocyrtoceras clarksoni Holland 2000

G. †Lyecoceras Mutvei 1957

G. †Paraphragmites Flower 1943

Fm. †Protobactritidae Chen et al. 1981

G. †Protobactrites Hyatt 1900

†Protobactrites clinatus Chen et al. 1981

†Protobactrites compressus Chen et al. 1981

†Protobactrites densus Chen et al. 1981

†Protobactrites heshuiensis Chen et al. 1981

†Protobactrites leijitunensis Chen et al. 1981

†Protobactrites loumianensis Chen et al. 1981

†Protobactrites rectus Chen et al. 1981

†Protobactrites rongxiensis Chen et al. 1981

†Protobactrites styloideum Barrande 1874

†Protobactrites subquadratus Chen et al. 1981

G. †Slemmestadoceras Kröger 2008

†Slemmestadoceras attavus Brøgger 1882

Invalid names: Riocerida King and Evans 2019 [empty]

Subcl. †Orthoceratoidea Zhuravleva 1994

Or. †Pseudorthocerida Barskov 1968

Fm. †Pseudorthoceratidae Flower and Caster 1935

G. †Buchanoceras Teichert and Glenister 1952

†Buchanoceras graviventrum Teichert and Glenister 1952

Subfm. †Cayutoceratinae Flower 1939

G. †Arpaoceras Zhuravleva 1962

G. †Bradfordoceras Flower and Caster 1935

G. †Cayutoceras Flower 1939

G. †Dnestroceras Zhuravleva 1961

G. †Metastromatoceras Zhuravleva 1957

G. †Stromatoceras Teichert and Glenister 1953

G. †Dinocycloceras Gordon 1964

†Dinocycloceras ballianum Girty 1909

†Dinocycloceras prolixum Gordon 1964

G. †Dolorthoceras Miller 1931

†Dolorthoceras caneyanum Girty 1909

†Dolorthoceras incisum Gordon 1964

†Dolorthoceras nakazawai Niko and Nishida 2000

†Dolorthoceras siphocentralis Krotow 1885

†Dolorthoceras stiliforme Shimanskiy 1948

†Dolorthoceras tenuifilosum Gordon 1964

G. †Geidoloceras Kröger 2008

†Geidoloceras ouaoufilalense Kröger 2008

G. †Hebetorthoceras Kröger and Mapes 2005

†Hebetorthoceras brokenarrowense Kröger and Mapes 2005

†Hebetorthoceras indianum Girty 1909

†Hebetorthoceras tricamerae Smith 1938

†Hebetorthoceras unicamera Smith 1938

G. †Houdongoceras Yang et al. 2021

†Houdongoceras chaohuensis Yang et al. 2021

G. †Mitorthoceras Gordon 1960

†Mitorthoceras clinatum Gordon, Jr. 1964

†Mitorthoceras crebriliratum Girty 1909

†Mitorthoceras girtyi Gordon 1964

†Mitorthoceras perfilosum Gordon 1960

Invalid names: Mooreoceras crebriliratum Girty 1909 [synonym]

†Mitorthoceras yellvillense Gordon 1964

G. †Mongoceras Miagkova 1967

†Mongoceras angustum Miagkova 1967

G. †Neocycloceras Flower and Caster 1935

†Neocycloceras obliqueannulatum Waagen 1879

†Neocycloceras obliquum Flower and Caster 1935

†Neocycloceras termierorum Kröger 2008

G. †Probatoceras Zhyravleva 1978

†Probatoceras crassum Zhuravleva 1978

Subfm. †Pseudactinoceratinae Schindewolf 1943

G. †Bergoceras Flower 1939

G. †Campyloceras M'Coy 1844

G. †Eusthenoceras Foord 1898

G. †Macroloxoceras Flower 1957

G. †Paraloxoceras Flower 1939

G. †Pseudactinoceras Schindewolf 1943

Subfm. †Pseudorthoceratinae Sweet 1964

G. †Eifeloceras Foerste 1929

G. †Pseudocyrtoceras Schindewolf 1943

G. †Pseudorthoceras Girty 1912

Invalid names: Mooreoceras Miller et al. 1933 [synonym]

G. †Simorthoceras Shimanskiy 1954

G. †Subdoloceras Kröger 2008

†Subdoloceras atrouzense Kröger 2008

†Subdoloceras engeseri Kröger 2008

†Subdoloceras tafilaltense Kröger 2008

G. †Subormoceras Kröger 2008

†Subormoceras dobrovljanense Kiselev 1968

†Subormoceras erfoudense Kröger 2008

†Subormoceras rashkovense Kiselev 1968

†Subormoceras rissaniense Kröger 2008

†Subormoceras skalaense Kiselev 1968

G. †Uralorthoceras Shimanskiy 1951

†Uralorthoceras tzwetaevae Shimanskiy 1951

†Uralorthoceras verneuili Moeller 1862

Invalid names: Mooreoceratidae Shimanskiy 1954 [synonym], Shikanoceratidae Shimansky 1956 [synonym]

Fm. †Spyroceratidae Shimizu and Obata 1935

G. †Adnatoceras Flower 1939

†Adnatoceras alaskense Gordon 1957

G. †Anastomoceras Flower 1939

G. †Atahococeras Niko et al. 2000

†Atahococeras timorense Niko et al. 2000

G. †Bitaunioceras Shimizu and Obata 1936

†Bitaunioceras buckhornense Niko et al. 2018

†Bitaunioceras coahuilense Miller 1944

†Bitaunioceras inordinatum Shimanskiy 1996

†Bitaunioceras krotowi Dewingthal 1951

†Bitaunioceras texanum Miller and Youngquist 1947

†Bitaunioceras undulatum Niko and Nishida 1987

†Bitaunioceras zonatum Gemmellaro 1889

G. †Cancellspyroceras Kröger 2008

†Cancellspyroceras loricatum Barrande 1868

G. †Cryptorthoceras Flower 1939

G. †Cyrtospyroceras Flower 1938

G. †Cyrtothoracoceras Turner 1964

G. †Diagoceras Flower 1936

†Diagoceras aptum Hall 1876

G. †Euloxoceras Miller et al. 1933

†Euloxoceras angustius Gordon 1964

†Euloxoceras greenei Miller et al. 1933

†Euloxoceras greeni Dunbar and Condra 1933

G. †Fusicoceras Flower 1939

G. †Geisonoceroides Flower 1939

G. †Gordonoceras Teichert and Glenister 1953

G. †Lopingoceras Shimanskiy 1962

†Lopingoceras acutanolatum Zhao et al. 1978

†Lopingoceras bicinctum Abich 1878

†Lopingoceras guangdeense Zhao et al. 1978

†Lopingoceras lopingense Stoyanow 1910

G. †Palaeospyroceras Chen et al. 1981

G. †Palmeroceras Flower 1936

G. †Petryoceras Flower 1939

G. †Pseudocycloceras Barskov 1959

G. †Reticycloceras Gordon 1960

†Reticycloceras croneisi Gordon 1960

†Reticycloceras girtyi Gordon 1964

†Reticycloceras peytonense Gordon 1964

†Reticycloceras sequoyahense Snider 1915

G. †Sceptrites Flower 1939

G. †Shikhanoceras Shimanskiy 1954

†Shikhanoceras sphaerophorum Shimanskiy 1954

G. †Spyroceras Hyatt 1884

†Spyroceras baffinense Schuchert 1900

†Spyroceras bilineatum Hall 1847

†Spyroceras boreale Foerste and Savage 1927

†Spyroceras chambliense Foerste 1924

†Spyroceras clathratoannulatum Roemer 1861

†Spyroceras crotalum Hall 1879

†Spyroceras cylindratum Foerste 1932

†Spyroceras cyrtopatronus Kröger 2008

†Spyroceras damesi Krause 1877

†Spyroceras ferum Billings 1866

†Spyroceras fukuijense Niko 1996

†Spyroceras giganteum Flower 1945

†Spyroceras latepatronus Kröger 2008

†Spyroceras middlevillense Foerste 1928

†Spyroceras olorus Hall 1879

†Spyroceras patronus Barrande 1866

†Spyroceras perlaeve Strand 1934

†Spyroceras persculptum Ruedemann 1926

†Spyroceras textumarenaceum Roemer 1861

G. †Suloceras Manda 2001

†Suloceras longipulchrum Kröger 2008

†Suloceras pulchrum Barrande 1866

G. †Tripteroceroides Miller and Furnish 1940

Fm. †Trematoceratidae Zakharov 1996

G. †Paratrematoceras Schastlivtseva 1981

†Paratrematoceras ornatum Schastlivtseva 1981

†Paratrematoceras salinarium Hauer 1846

†Paratrematoceras shevyrevi Schastlivtseva 1981

G. †Phatthalungoceras Tongtherm and Nabhitabhata 2018

†Phatthalungoceras srisuki Tongtherm and Nabhitabhata 2018

G. †Pseudotemperoceras

†Pseudotemperoceras nyalamense Chen 1981

†Pseudotemperoceras pulchrum Schastlivceva 1986

G. †Trematoceras Eichwald 1851

†Trematoceras boreale Schastlivceva 1986

†Trematoceras clarum Schastlivceva 1986

†Trematoceras elegans Muenster 1831

Invalid names: Orthocera freieslebense Klipstein 1843 [synonym], Orthocera politum Klipstein 1843 [synonym], Orthoceras campanile Mojsisovics 1869 [synonym], Orthoceras dubium Hauer 1847 [synonym], Orthoceras freieslebense Klipstein 1843 [synonym]

†Trematoceras hikichii Niko 2016

†Trematoceras insperatum Schastlivceva 1988

†Trematoceras lytosiphon Gemmellaro 1904

†Trematoceras mangishlakense Schastlivceva 1981

†Trematoceras solidum Schastlivceva 1988

†Trematoceras subcampanile Kiparisova 1954

†Trematoceras vulgare Schastlivceva 1981

†Trematoceras watanabei Niko and Ehiro 2020

G. †Zhuravlevia Doguzhaeva 1994

†Zhuravlevia insperata Doguzhaeva 1994

Invalid names: Orthoceras acum Reis 1907 [nomen dubium], Orthoceras austriacum von Mojsisovics 1873 [nomen dubium], Orthoceras baconicum Frech 1907 [nomen dubium], Orthoceras billiemense Gemmellaro 1904 [nomen dubium], Orthoceras blakei Gabb 1864 [nomen dubium], Orthoceras celticum von Mojsisovics 1873 [nomen dubium], Orthoceras increscens Kittl 1908 [nomen dubium], Orthoceras indoaustralicum Bulow 1915 [nomen dubium], Orthoceras lateseptatum Hauer 1846 [nomen dubium], Orthoceras lennaense Stoppani 1859 [nomen dubium], Orthoceras mojsisovicsi Salomon 1895 [nomen dubium], Orthoceras multilabiatum Hauer 1887 [nomen dubium], Orthoceras nodosum Kutassy 1927 [nomen dubium], Orthoceras pulchellum Hauer 1849 [nomen dubium], Orthoceras pulchristriatum Bulow 1915 [nomen dubium], Orthoceras rotundulum Bulow 1915 [nomen dubium], Orthoceras sandlingense von Mojsisovics 1873 [nomen dubium], Orthoceras shastense Hyatt and Smith 1905 [nomen dubium], Orthoceras spitiense Diener 1907 [nomen dubium], Orthoceras styriacum von Mojsisovics 1873 [nomen dubium], Orthoceras subellipticum d'Orbigny 1849 [nomen dubium], Orthoceras subtiliseptatum Gemmellaro 1904 [nomen dubium], Orthoceras triadicum von Mojsisovics 1873 [nomen dubium], Orthoceras variestriatum Reis 1901 [nomen dubium]

G. †Palaeoteuthis d'Orbigny 1850

†Palaeoteuthis honoratianus d'Orbigny 1850

†Palaeoteuthis infira Shimansky 1947

Subcl. †Plectronoceratia Wade 1988

Or. †Protactinoceratida Chen and Qi 1979

G. †Benxioceras

G. †Mastoceras

Fm. †Protactinoceratidae Chen 1979

G. †Physalactinoceras

G. †Protactinoceras

G. †Sinoeremoceras Kobayashi 1933

G. †Wanwanoceras Kobayashi 1933

Invalid names: Plectronoceratida Flower 1964 [empty]

G. †Rhyncholithes Blainville 1827

†Rhyncholithes marcellae Tuuk 1985

G. †Rhynchoteuthis d'Orbigny 1847

†Rhynchoteuthis astieriana d'Orbigny 1845

†Rhynchoteuthis minima von der Marck 1858

†Rhynchoteuthis monasteriensis von der Marck 1858

G. †Scaptorrhynchus Bellardi 1871

G. †Sichunoceras

G. †Teratoceroides Xu and Lai 1983

G. †Tillicheilus Shimanskiy 1947

G. †Toxancyloceras Delanoy 2003

G. †Werthenoceras

Or. †Yanhecerida Chen and Qi 1979

G. †Oonendoceras

Fm. †Yanheceratidae Chen and Qi 1979

G. †Aetheloxoceras

G. †Archendoceras

G. †Yanheceras Chen and Zou 1979

Invalid names: Actinoceratoidea Teichert et al. 1964 [empty], Ectocochlia Schwarz 1894 [empty], Endocycloceratidae Ulrich et al. 1944 [empty], Irianoceras Kobayashi and Burton 1971 [nomen dubium], Mesoteuthoidea Naef 1921 [empty], Ohioceratidae Shimizu and Obata 1936 [invalid subgroup], Plectronocerida Flower 1964 [empty], Robsonoceratidae Ulrich et al. 1944 [empty], Stemtonoceratidae Ulrich et al. 1944 [empty], Tarphyceratia King and Evans 2019 [empty], Tetrabranchiata [empty]

Diagnosis

No diagnoses are available