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Hildoceratidae

Cephalopoda - Ammonitida - Hildoceratidae

Synonymy list
YearName and author
1867Hildoceratidae Hyatt
1952Hildoceratidae Arkell p. 259
1955Hildoceratidae Howarth
1970Hildoceratidae Frebold
1981Hildoceratidae Donovan et al.
1992Hildoceratidae Thomson and Smith p. 33
1993Hildoceratidae Arthur et al. p. 29
1996Hildoceratidae Smith and Tipper p. 54
2003Hildoceratidae Meister and Friebe
2006Hildoceratidae Hillebrandt p. 229
2007Hildoceratidae Sarih et al. p. 99
2013Hildoceratidae Howarth p. 68
2022Hildoceratidae Benzaggagh et al. p. 10

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classCephalopodaCuvier 1797
subclassAmmonoidea()
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyHildoceratoidea(Hyatt 1867)
familyHildoceratidaeHyatt 1867
familyHildoceratidaeHyatt 1867

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.

Fm. †Hildoceratidae Hyatt 1867
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Subfm. †Arieticeratinae Howarth 1955
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G. †Arieticeras Seguenza 1885
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Arieticeras algovianum Oppel 1862
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Invalid names: Ammonites retrorsicosta Oppel 1862 [synonym], Arieticeras almoetianum Fucini 1931 [synonym]
Arieticeras amalthei Oppel 1853
Arieticeras apertum Monestier 1934
Arieticeras bertrandi Kilian 1889
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Invalid names: Hildoceras reynesi Fucini 1908 [synonym], Hildoceras reynesianum Fucini 1908 [synonym]
Arieticeras disputabile Fucini 1908
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Invalid names: Arieticeras gerardi Monestier 1934 [synonym]
Arieticeras domarense Meneghini 1867
Arieticeras japonicum Matsumoto 1947
Arieticeras lupheri Imlay 1968
Arieticeras macrum Monestier 1934
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Invalid names: Arieticeras transitor Monestier 1934 [synonym]
Arieticeras micrasterias Meneghini 1874
Arieticeras ruthenense Reynes 1868
Invalid names: Geczya Fantini Sestini 1977 [synonym], Meneghinia Vecchia 1949 [synonym], Protoarieticeras Cantaluppi 1970 [synonym], Pseudoarieticeras Cantaluppi 1970 [synonym], Seguenziceras Levi 1896 [synonym]
G. †Emaciaticeras Fucini 1931
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Emaciaticeras archimedis Fucini 1931
Emaciaticeras emaciatum Catullo 1853
Emaciaticeras fervidum Fucini 1931
Emaciaticeras lottii Gemmellaro 1885
Invalid names: Seguentia Fucini 1931 [nomen nudum], Trinacrioceras Fucini 1931 [nomen nudum], Ugdulenia Cantaluppi 1970 [synonym]
G. †Fontanelliceras Fucini 1931
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Fontanelliceras fontanellense Gemmellaro 1885
G. †Leptaleoceras Buckman 1918
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Leptaleoceras accuratum Fucini 1931
Leptaleoceras compressum Monestier 1934
Leptaleoceras insigne Fucini 1931
Leptaleoceras leptum Buckman 1918
Leptaleoceras primoglabrum Hillebrandt 2006
Leptaleoceras ugdulenai Gemmellaro 1885
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Invalid names: Arieticeras lozeriense Monestier 1934 [synonym]
G. †Mauretaniaceras Meister et al. 2011
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Mauretaniaceras elmii Meister et al. 2011
G. †Tauromeniceras Mouterde 1967
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Tauromeniceras nerinea Fucini 1931
Invalid names: Neoamaciaticeras Cantaluppi 1970 [objective synonym], Tauromenia Fucini 1931 [replaced]
Invalid names: Seguenziceratinae Spath 1924 [replaced]
Subfm. †Bouleiceratinae Arkell 1950
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Subg. †Bouleiceras (Colcanapites) Collignon 1958
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Bouleiceras arabicum Arkell 1952
Bouleiceras elegans Arkell 1952
Bouleiceras marraticum Arkell 1952
Bouleiceras nitescens Thevenin 1906
Bouleiceras rebillyi Collignon 1958
Bouleiceras rectum Arkell 1952
Bouleiceras rochi Collignon 1958
Bouleiceras tumidum Arkell 1952
Invalid names: Colcanapites Collignon 1958 [synonym]
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Frechiella achillei Renz 1912
Frechiella helenae Renz 1925
Frechiella kammerkarensis Stolley 1903
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Invalid names: Frechiella liviae Renz 1925 [synonym], Frechiella pannonica Prinz 1906 [synonym], Frechiella stolleyi Renz 1925 [synonym]
Frechiella octaviae Renz 1925
Frechiella subcarinata Young and Bird 1822
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Invalid names: Ammonites sabinus d'Orbigny 1850 [synonym]
Frechiella venantii Catullo 1846
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Invalid names: Frechiella curvata Prinz 1904 [synonym]
Invalid names: Achilleia Renz 1913 [synonym]
G. †Jacobella Jeannet 1908
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Jacobella lugeoni Jeannet 1908
Invalid names: Neoparoniceras Rulleau et al. 2003 [synonym], Oxyparoniceras [synonym]
G. †Kohaticeras Fatmi and Hölder 1975
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Kohaticeras razai Fatmi and Hölder 1975
Kohaticeras rehmani Fatmi and Hölder 1975
G. †Nejdia Arkell 1952
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Nejdia arabica Gelin 2022
Nejdia bramkampi Arkell 1952
Nejdia furnishi Arkell 1952
Nejdia pseudogruneri Thevenin 1908
G. †Paroniceras Bonarelli 1893
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Paroniceras sternale d'Orbigny 1845
Paroniceras substernale Pelosio 1968
Subfm. †Grammoceratinae Buckman 1904
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Catulloceras dumortieri Tholliere 1874
Invalid names: Dactylogrammites Buckman 1925 [synonym]
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Dumortieria brancoi Benecke 1905
Dumortieria costula Reinecke 1818
Dumortieria kochi Benecke 1905
Dumortieria levesquei d'Orbigny 1844
Dumortieria meneghinii Zittel 1887
Dumortieria moorei Lycett 1857
Dumortieria prisca Buckman 1891
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Invalid names: Ammonites undulatus Quenstedt 1885 [synonym]
Dumortieria radians Reinecke 1818
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Invalid names: Dumortieria rhodanica Haug 1887 [synonym]
Dumortieria radiosa Seebach 1864
Dumortieria rustica Buckman 1902
Dumortieria striatulocostata Quenstedt 1885
Dumortieria tabulata Buckman 1892
Invalid names: Paradumortieria Elmi and Caloo-Fortier 1985 [synonym], Phenakoceras Maubeuge 1949 [synonym], Phenakocerites Maubeuge 1950 [objective synonym]
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Grammoceras normanianum d'Orbigny 1900
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Invalid names: Costigrammoceras costigerum Buckman 1926 [synonym]
Grammoceras striatulum Sowerby 1825
Grammoceras thouarsense d'Orbigny 1844
Grammoceras timorense Krumbeck 1923
Invalid names: Costigrammoceras Buckman 1926 [synonym]
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Hudlestonia affinis von Seebach 1864
Hudlestonia serrodens Quenstedt 1846
G. †Phlyseogrammoceras Buckman 1901
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Invalid names: Gruneria Gabilly 1974 [synonym]
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Subg. †Pleydellia (Pleydellia) Buckman 1904
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Pleydellia (Pleydellia) ruttneri Seyed-Emami et al. 2008
Pleydellia arkelli Maubeuge 1950
Pleydellia buckmani Maubeuge 1947
Pleydellia costulata Zieten 1830
Pleydellia falcifer Maubeuge 1950
Pleydellia leura Buckman 1890
Pleydellia misera Buckman 1902
Pleydellia subcompta Branco 1879
Invalid names: Canavarina Buckman 1904 [synonym], Cotteswoldia [synonym], Nadorites Elmi and Caloo-Fortier 1985 [synonym], Walkericeras Buckman 1913 [synonym]
G. †Podagrosites Guex 1973
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Podagrosites aratum Buckman 1892
Podagrosites quadratus Quenstedt 1846
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Pseudogrammoceras aratum Buckman 1890
Pseudogrammoceras bingmanni Denckmann 1887
Pseudogrammoceras doerntense Denckmann 1887
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Invalid names: Pseudogrammoceras explicatum Buckman 1904 [synonym]
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Invalid names: Pseudogrammoceras cotteswoldiae Buckman 1902 [synonym], Pseudogrammoceras expeditum Buckman 1902 [synonym], Pseudogrammoceras pedicum Buckman 1904 [synonym], Pseudogrammoceras regale Buckman 1904 [synonym], Pseudogrammoceras subfallaciosum Buckman 1902 [synonym]
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Invalid names: Ammonites bodei Denckmann 1887 [synonym], Hildoceras quadratum Haug 1885 [synonym]
Pseudogrammoceras mediterraneum García Gómez and Rivas 1980
Pseudogrammoceras muelleri Denckmann 1887
Pseudogrammoceras pachu Buckman 1902
Pseudogrammoceras thrasu Buckman 1902
Invalid names: Monestieria Cossmann 1922 [synonym]
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Pseudolillia apenninica Sassaroli and Venturi 2005
Pseudolillia emiliana Reynes 1868
Pseudolillia murvillensis Maubeuge 1949
G. †Troitsaia Poulton and Tipper 1991
G. †Yakounia
Invalid names: Dumortieriinae Schindewolf 1964 [synonym], Monestierinae Sapunov 1965 [synonym]
Subfm. †Harpoceratinae Neumayr 1875
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G. †Canavaria Gemmellaro 1886
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Subg. †Canavaria (Canavaria) Gemmellaro 1886
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Canavaria (Canavaria) naxensis Gemmellaro 1886
Canavaria cultraroi Fucini 1931
Canavaria haugi Gemellaro 1885
Canavaria rosenbergi Fucini 1931
Canavaria zancleana Fucini 1931
Invalid names: Naxensiceras Vecchia 1949 [synonym], Oregonites Wiedenmayer 1980 [synonym]
G. †Cleviceras Howarth 1992
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Eleganticeras elegans Sowerby 1815
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Invalid names: Ammonites capellinus Schlotheim 1820 [synonym], Osperleioceras viluiense Krimholtz 1956 [synonym]
Eleganticeras elegantulum Young and Bird 1828
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Invalid names: Ammonites ovatulus Simpson 1855 [synonym], Ammonites rugatulus Simpson 1855 [synonym], Ammonites similis Simpson 1843 [synonym], Eleganticeras pseudoelegans Buckman 1913 [synonym]
Eleganticeras exaratum Young and Bird 1828
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Invalid names: Ammonites erratus Simpson 1855 [synonym], Ammonites multifoliatus Simpson 1855 [synonym]
Invalid names: Elegantuliceras Buckman 1913 [synonym], Leptarpites Repin 1970 [synonym], Ochotoceras [synonym]
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Subg. †Harpoceras (Harpoceras) Waagen 1869
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Invalid names: Glyptarpites glyptus Buckman 1927 [synonym]
Harpoceras dynastes Waagen 1875
Harpoceras eseri Oppel 1856
Harpoceras falciferum Sowerby 1820
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Invalid names: Ammonites mulgravius Young and Bird 1828 [synonym], Harpoceras concinnum Buckman 1927 [synonym], Harpoceras falciferoides Buckman 1927 [synonym], Harpoceras falcula Buckman 1926 [synonym], Harpoceras fellenbergi Hug 1898 [synonym], Phaularpites exiguus Buckman 1928 [synonym], Tardarpoceras tardum Buckman 1927 [synonym]
Harpoceras ignobile Sowerby 1840
Harpoceras kobelli Oppel 1863
Harpoceras lunula Zieten 1830
Harpoceras nitescens Schlegelmilch 1976
Harpoceras rauracum Mayer 1864
Harpoceras serpentinum Schlotheim 1813
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Invalid names: Ammonites alternatus Simpson 1843 [synonym]
Harpoceras subplanatum Oppel 1856
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Invalid names: Ammonites complanatus d'Orbigny 1846 [replaced]
Invalid names: Falcifericeras Breistroffer 1949 [objective synonym], Gallitellia Venturi and Ferri 2001 [synonym], Glyptarpites [synonym], Harpoceratoides [synonym], Kolymoceras Dagis 1970 [synonym], Lioceras Bayle 1878 [synonym], Phaularpites [synonym], Tardarpoceras Buckman 1927 [synonym]
G. †Maconiceras Buckman 1926
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Maconiceras soloniacense Lissajous 1906
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Invalid names: Maconiceras vigoense Buckman 1926 [synonym]
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Neolioceratoides hoffmanni Gemmellaro 1886
G. †Osperleioceras Krimholz 1957
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Invalid names: Pseudopolyplectus [synonym]
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Ovaticeras ovatum Young and Bird 1822
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Invalid names: Ovaticeras pseudovatum Buckman 1918 [synonym]
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Polyplectus discoides Zittel 1831
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Invalid names: Oxynoticeras meunieri Monestier 1921 [synonym]
Invalid names: Micropolyplectus Guex 1973 [synonym]
G. †Praepolyplectus Venturi 1981
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Subg. †Pseudolioceras (Pseudolioceras) Buckman 1889
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Invalid names: Ammonites falcodiscus Quenstedt 1885 [synonym], Ammonites lectus Simpson 1843 [synonym], Ammonites simplex Simpson 1855 [synonym], Ammonites wurttenbergeri Denckmann 1887 [synonym], Pseudolioceras fabrei Monestier 1931 [synonym]
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Invalid names: Ammonites leptophyllus Simpson 1855 [synonym], Ammonites subconcavus Young and Bird 1828 [synonym], Harpoceras kopiki Wierzbowski and Kuliki 1981 [synonym], Praehaploceras zweiselei Monestier 1931 [synonym], Pseudolioceras dumortieri Buckman 1904 [synonym], Pseudolioceras gradatum Buckman 1902 [synonym], Pseudolioceras kedonense Repin 1966 [synonym], Pseudolioceras pumilum Buckman 1902 [synonym], Pseudolioceras spitsbergense Frebold 1975 [synonym], Pseudolioceras whitbiense Buckman 1911 [synonym], Pseudolioceras xistense Monestier 1931 [synonym]
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Tugurites fastigatus Westermann 1969
Tugurites tugurensis Kalacheva and Sey 1970
Tugurites whiteavesi White 1889
Pseudolioceras alienum Dagis 1967
Pseudolioceras beyrichi Schloenbach 1865
Pseudolioceras compactile Simpson 1855
Pseudolioceras costistriatum Westermann 1969
Pseudolioceras lythense Young and Bird 1828
Pseudolioceras maclintocki Haughton 1858
Invalid names: Buckmanites [synonym], Praehaploceras Monestier 1930 [synonym], Pseudowalkericeras Maubeuge 1949 [synonym]
G. †Taffertia
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G. †Tiltoniceras Buckman 1913
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Tiltoniceras antiquum Wright 1882
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Invalid names: Ammonites capillatus Denckmann 1887 [synonym], Harpoceras schroederi Denckmann 1893 [synonym], Ovaticeras facetum Repin 1966 [synonym]
Tiltoniceras costatum Buckman 1913
Tiltoniceras propinquum Whiteaves 1884
Invalid names: Pacificeras Repin 1970 [synonym]
Invalid names: Polyplectinae Venturi 1981 [synonym]
Subfm. †Hildoceratinae Hyatt 1867
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G. †Atacamiceras Hillebrandt 1987
G. †Hildaites
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Subg. †Hildaites (Hildaites) Buckman 1921
Subg. †Hildaites (Martanites) Venturi 1997
Hildaites bisulcatus Sassaroli and Venturi 2012
Hildaites calamantis Sassaroli and Venturi 2012
Hildaites chatryi Bécaud 2006
Hildaites clavatus Sassaroli and Venturi 2010
Hildaites crassus Guex 1973
Hildaites evolutus Sassaroli and Venturi 2012
Hildaites exilis Venturi 1973
Hildaites forte Buckman 1921
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Invalid names: Murleyiceras gyrale Buckman 1928 [synonym]
Hildaites levisoni Simpson 1843
Hildaites murleyi Buckman 1841
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Invalid names: Ammonites borealis Seebach 1864 [synonym], Hildoceras undicosta Merla 1933 [synonym], Hildoceratoides propeserpentinus Buckman 1921 [synonym], Murleyiceras aptum Buckman 1922 [synonym]
Hildaites pionneaui Bécaud 2006
Hildaites planiventris Sassaroli and Venturi 2012
Hildaites pseudolevisoni Venturi 1981
Hildaites sanderi Arkell 1952
Hildaites spiralis Sassaroli and Venturi 2010
Hildaites striatus Guex 1973
Hildaites subserpentinum Buckman 1921
Hildaites subserpentinus Buckman 1921
Hildaites wrighti Spath 1913
Invalid names: Cingolites Sassaroli and Venturi 2010 [synonym], Harpohildoceras [synonym], Hildoceratoides [synonym], Murleyiceras Buckman 1921 [synonym], Neotaffertia Venturi and Ferri 2001 [synonym], Petranoceras Venturi 1995 [synonym], Praemercaticeras Venturi 1981 [synonym]
G. †Hildaitoides Hillebrandt 1987
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Subg. †Hildoceras (Lillia) Bayle 1878
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Hildoceras ameuri Rulleau et al. 2001
Hildoceras apertum Gabilly 1976
Hildoceras bastiani Fucini 1905
Hildoceras bifrons Bruguiere 1792
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Invalid names: Ammonites hildensis Young and Bird 1822 [synonym], Ammonites walcotii Sowerby 1815 [synonym], Hildoceras angustisiphonatum Prinz 1904 [synonym]
Hildoceras caterinii Merla 1933
Hildoceras crassa Mitzopoulos 1930
Hildoceras crassum Mitzopoulos 1930
Hildoceras graecum Renz 1912
Hildoceras laticosta Bellini 1900
Hildoceras lusitanicum Meister 1913
Hildoceras semipolitum Buckman 1902
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Invalid names: Hildoceras semicosta Buckman 1926 [synonym]
Hildoceras snoussi Elmi 1977
Hildoceras sublevisoni Fucini 1919
Hildoceras tethysi Geczy 1967
Invalid names: Goniohildoceras Seguenza 1886 [synonym], Urkutites Géczy 1967 [synonym]
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Mercaticeras dilatatum Meneghini 1883
Mercaticeras dilatum Meneghini 1883
Mercaticeras humeralis Merla 1933
Mercaticeras mercati Hauer 1856
Mercaticeras thyrrenicum Fucini 1905
Mercaticeras umbilicatum Buckman 1913
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Orthildaites becaudi Kovács 2011
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Invalid names: Hildoceras (Lillia) renzi Mitzopoulos 1930 [synonym], Orthildaites intermedius Guex 1973 [synonym], Orthildaites orthus Buckman 1923 [synonym]
Subfm. †Leukadiellinae Macchioni and Venturi 2000
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Leukadiella helenae Renz 1913
Leukadiella ionica Renz and Renz 1947
Leukadiella jeanneti Renz 1927
Subfm. †Mercaticeratinae Guex 1973
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G. †Pseudocrassiceras Rulleau and Jattiot 2019
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Pseudocrassiceras bayani Dumortier 1874
Subfm. †Protogrammoceratinae Mattei 1974
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G. †Fuciniceras Haas 1913
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Fuciniceras ambiguum Fucini 1900
Fuciniceras balatonense Géczy and Meister 1998
Fuciniceras bicicolae Bonarelli 1895
Fuciniceras bonarellii Fucini 1900
Fuciniceras boscense Reynes 1868
Fuciniceras celebratum Fucini 1900
Fuciniceras dilectum Fucini 1900
Fuciniceras dubari Cantaluppi and Montanari 1976
Fuciniceras fontaneillesi Dommergues and Meister 1986
Fuciniceras formosum Wiedenmayer 1977
Fuciniceras hungaricum Geczy 1976
Fuciniceras isseli Fucini 1900
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Invalid names: Hildoceras brevispirata Fucini 1900 [synonym]
Fuciniceras lavinianum Fucini 1900
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Invalid names: Grammoceras portisi Fucini 1900 [synonym], Hildoceras intumescens Fucini 1901 [synonym]
Fuciniceras marianii Fucini 1904
Fuciniceras mellahense Dubar 1961
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Invalid names: Protogrammoceras peyrei Dubar 1978 [synonym]
Fuciniceras pectinatum Meneghini 1881
Fuciniceras perlicatum Fucini 1905
Fuciniceras suejensis Monestier 1934
Fuciniceras targionii Fucini 1905
Fuciniceras volubile Fucini 1900
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Invalid names: Grammoceras varicostatum Fucini 1900 [synonym], Harpoceras pantanellii Fucini 1900 [synonym]
Fuciniceras wiedenmayeri Braga and Rivas 1980
Invalid names: Eofuciniceras Cantaluppi 1970 [synonym], Neofuciniceras Cantaluppi 1970 [synonym]
G. †Lioceratoides Spath 1919
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Lioceratoides serotinus Bettoni 1900
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Invalid names: Platyharpites platypleurus Buckman 1927 [synonym], Praeleioceras mansuetum Fucini 1929 [synonym]
Invalid names: Nagaoceras Matsumoto 1947 [synonym], Platyharpites Buckman 1927 [synonym], Praeleioceras Fucini 1929 [synonym]
G. †Protogrammoceras Spath 1913
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Subg. †Protogrammoceras (Fieldingiceras) Wiedenmayer 1980
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Invalid names: Ammonites affricense Reynes 1868 [synonym], Grammoceras penenudum Monestier 1934 [synonym], Grammoceras subnaxense Monestier 1934 [synonym]
Invalid names: Fieldingia Cantaluppi 1970 [replaced]
Subg. †Protogrammoceras (Matteiceras) Wiedenmayer 1980
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Invalid names: Protogrammoceras monestieri Fischer 1975 [synonym]
Fuciniceras (Matteiceras) nitescens Young and Bird 1828
Protogrammoceras (Matteiceras) diornatum Dommergues et al. 1985
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Invalid names: Argutarpites argutus Buckman 1923 [synonym]
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Invalid names: Bassaniceras infidum Fucini 1929 [synonym]
Protogrammoceras ionicus Dommergues et al. 2000
Protogrammoceras normanianum d'Orbigny 1844
Protogrammoceras pseudodilectum Dommergues et al. 1985
Protogrammoceras sublaeve Monestier 1934
Protogrammoceras thevenini Collignon 1958
Invalid names: Argutarpites Buckman 1923 [synonym], Bassaniceras Fucini 1929 [objective synonym], Eoprotogrammoceras Cantaluppi 1970 [synonym], Neoprotogrammoceras Cantaluppi 1970 [synonym], Paltarpites Buckman 1922 [synonym], Wrightia Gemmellaro 1886 [replaced]
Subfm. †Tmetoceratinae Spath 1936
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G. †Tmetoceras Buckman 1892
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Subg. †Tmetoceras (Tmetoites) Westermann 1964
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Tmetoceras circulare Buckman 1905
Tmetoceras difalensis Gemmellaro 1886
Tmetoceras hollandae Buckman 1883
Tmetoceras kirki Westermann 1964
Tmetoceras regleyi Thiollière 1874
Tmetoceras scissum Benecke 1865
Tmetoceras tenui Westermann 1964
Invalid names: Tmetoites Westermann 1964 [synonym]
Invalid names: Paroniceratinae Schindewolf 1963 [empty]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragoniteo
Environment: marinec
Locomotion: fast-movingo
Life habit: nektonico
Diet: carnivoreo
Vision: well-developedc
Created: 2005-01-28 02:27:03
Modified: 2009-10-08 14:14:55
Source: o = order, c = class
References: Kiessling 2003, Kiessling 2004

Age range: base of the Hettangian to the top of the Hauterivian or 201.30000 to 129.40000 Ma

Collections (2781 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Early/Lower Jurassic201.4 - 174.7Canada (British Columbia) Fontanelliceras juliae, Leptaleoceras spp., Protogrammoceras spp., Arieticeras algovianum (199668) Fontanelliceras spp., Protogrammoceras spp. (199658 199659) Fontanelliceras spp., Protogrammoceras spp., Protogrammoceras nipponicum (199656) Fuciniceras sp. (199661) Fuciniceras sp., Leptaleoceras accuratum (199679) Fuciniceras sp., Protogrammoceras sp. (53105) Fuciniceras sp., Protogrammoceras spp. (199654) Fuciniceras sp., Protogrammoceras spp., Leptaleoceras accuratum (199639) Fuciniceras sp., Protogrammoceras spp., Protogrammoceras nipponicum, Fontanelliceras fontanellense (199610) Leptaleoceras spp. (199651 199662) Leptaleoceras spp., Protogrammoceras spp. (199612 199652 199676) Protogrammoceras nipponicum (199666) Protogrammoceras nipponicum, Arieticeras algovianum (199653) Protogrammoceras spp. (199663 199674 199677) Protogrammoceras spp., Arieticeras algovianum (199613 199638) Protogrammoceras spp., Leptaleoceras accuratum (199616 199655 199678) Protogrammoceras spp., Leptaleoceras accuratum, Arieticeras algovianum (199690)
Early/Lower Jurassic201.4 - 174.7Italy (Trento) Ammonites complanatus (232106)
Early/Lower Jurassic - Middle Jurassic201.4 - 161.5Chile (Huasco) Eleganticeras elongatum (223402) Harpoceras sp. (223418)
Early/Lower Jurassic - Middle Jurassic201.4 - 161.5Indonesia Harpoceras eseri (132795)
Hettangian201.3 - 199.3Greenland Pseudolioceras sp. (162103 162108)
Sinemurian199.3 - 190.8Indonesia (Timor) Grammoceras timorense (205680)
Sinemurian - Pliensbachian199.3 - 182.7Chile (Copiapó) Arieticeras sp. (222926)
Sinemurian - Early/Lower Toarcian199.3 - 182.0Chile (Copiapó) Arieticeras sp., Harpoceras sp., Hildaites sp., Protogrammoceras sp. (223622)
Late/Upper Sinemurian - Early/Lower Pliensbachian196.5 - 183.0Hungary Fuciniceras sp. (78630 78691)
Late/Upper Sinemurian - Late/Upper Pliensbachian196.5 - 183.0Morocco Fuciniceras mariani (205770)

Youngest occurrences

Time interval Ma Country or state PBDB collection number
Aalenian174.1 - 170.3Italy Tmetoceras scissum (198954 198955 198956) Tmetoceras scissum, Tmetoceras regleyi (198944 198946)
Aalenian174.1 - 170.3Canada (Northwest Territories) Pseudolioceras mclintocki (34232 34233)
Early/Lower Bajocian171.6 - 168.4Canada (Yukon) Pseudolioceras sp. (114626) Pseudolioceras spp. (208208)
Early/Lower Bajocian171.6 - 168.4USA (Alaska) Pseudolioceras costistriatum (175649) Pseudolioceras fastigatum (175614 175627 175652 175661) Pseudolioceras fastigatum, Pseudolioceras costistriatum (175617) Pseudolioceras sp. (5206 5237 5446 5486 5488) Pseudolioceras whiteavesi (5472 5490)
Early/Lower Bajocian171.6 - 168.4Russian Federation Tugurites fastigatus (129594 129595 129675) Tugurites sp. (129817)
Discites171.6 - 167.7USA (Alaska) Pseudolioceras fastigatum (175615 175623 175624)
Late/Upper Jurassic161.5 - 145.0Argentina (Mendoza) Harpoceras sp. (137144)
Early/Lower Kimmeridgian155.7 - 150.8India Harpoceras kobelli (234313)
Early/Lower Kimmeridgian155.7 - 150.8France (Haute-Normandie) Ammonites serpentinus (48856)
Hauterivian132.9 - 129.4France Polyplectus quadrifidus (96668)