PBDB Taxon

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Lytoceras

Cephalopoda - Ammonitida - Lytoceratidae

Taxonomy

Lytoceras was named by Suess (1865) [Sepkoski's age data: J Sine-u K Ceno-l Sepkoski's reference number: 302]. It is the type genus of Lytoceratidae, Lytoceratinae.

It was reranked as Ammonites (Lytoceras) by Meneghini (1875).

It was assigned to Ammonites by Meneghini (1875); to Ammonoidea by Böse (1923); to Ammonoidea by Stanton (1895), Imlay (1960) and Sepkoski (2002); to Lytoceratidae by Wiedmann (1970), Förster (1975), Murphy (1975), Avram and Gradinaru (1993), Zeiss et al. (1994), Meister and Friebe (2003), Lukeneder (2004), Hillebrandt (2006) and Szives (2007); and to Lytoceratinae by Westermann (1969), Imlay and Jones (1970), Förster and Weier (1983), Reboulet (1996), Wright et al. (1996), Blau (1998), Alsen (2006), Hoffmann (2010), Galácz and Kassai (2012), Grigore (2013) and Whicher et al. (2023).

Species

Eulytoceras anisoptychum, Eulytoceras inaequalicostatus, Eulytoceras lepidum, Eulytoceras phestum, Hemilytoceras immanis, L. (Argonauticeras), L. (Derolytoceras), L. (Saturnoceras), L. (Trachylytoceras), L. album, L. aulaeum, L. baconicum, L. batesi, L. belliseptatiforme, L. celticum, L. colusaense, L. cornucopia, L. crenatum, L. elegans, L. eudesianum, L. fimbriatoides, L. fimbriatum, L. francisci, L. fuggeri, L. furcicrenatum, L. galatiforme, L. huberti, L. juilleti (syn. L. obliquestrangulatum), L. lexeni, L. liebigi (syn. Ammonites adelae), L. linneanum, L. montanum, L. municipale, L. orsinii, L. ovimontanum, L. perplexum, L. pictaviense, L. polycyclum, L. praesublineatum, L. rex, L. rhodanicum, L. richei, L. salebrosum, L. saturnale, L. schlosseri (syn. L. hennigi), L. secernendum, L. siemensi, L. strambergensis, L. subfimbriatum, L. subfrancisci (syn. L. vaceki), L. sublineatum, L. subsequens, L. sutile, L. taharoaense, L. traski, L. trompianum, L. villae (syn. Kallilytoceras residuum), L. vogdti, Metalytoceras triboleti, Pterolytoceras exoticus, Pterolytoceras magnum, Thysanolytoceras vicinum

Species lacking formal opinion data

L. annibal, L. cinctum, L. cornucopiae, L. fibriatum, L. ophioneum, L. penicillatum, L. porlaeve, L. raricinctum, L. subescens, L. taharosense

Synonyms

Thysanolytoceras was named by Buckman (1905).

It was synonymized subjectively with Lytoceras by Hoffmann (2010) and Whicher et al. (2023).

It was assigned to Lytoceratinae by Jeannet (1951); and to Ammonoidea by Collignon (1962).
Eulytoceras was named by Spath (1927) [Sepkoski's age data: K Haut K Barr-u]. Its type is Ammonites inaequalicostatus.

It was synonymized subjectively with Lytoceras by Hoffmann (2010).

It was assigned to Lytoceratidae by Murphy (1975); to Lytoceratinae by Wright et al. (1996) and Landra et al. (2000); and to Ammonoidea by Sepkoski (2002).
Hemilytoceras was named by Spath (1927) [Sepkoski's age data: J Call-u J Tith-u]. Its type is Ammonites immanis.

It was synonymized subjectively with Lytoceras by Hoffmann (2010).

It was assigned to Lytoceratinae by Wright et al. (1996); and to Ammonoidea by Sepkoski (2002).
Metalytoceras was named by Spath (1927) [Sepkoski's age data: K Vala]. Its type is Lytoceras triboleti.

It was synonymized subjectively with Lytoceras by Hoffmann (2010).

It was assigned to Lytoceratinae by Wright et al. (1996); and to Ammonoidea by Sepkoski (2002).
Pterolytoceras was named by Spath (1927) [Sepkoski's age data: K Vala].

It was synonymized subjectively with Lytoceras by Hoffmann (2010).

It was assigned to Lytoceratinae by Wright et al. (1996); and to Ammonoidea by Sepkoski (2002).
Kallilytoceras was named by Buckman (1921).

It was reranked as Lytoceras (Kallilytoceras) by Fucini (1920); it was synonymized subjectively with Lytoceras by Hoffmann (2010).

It was assigned to Lytoceras by Fucini (1920).
Crenilytoceras was named by Buckman (1926).

It was synonymized subjectively with Lytoceras by Hoffmann (2010).
Orcholytoceras was named by Buckman (1926).

It was synonymized subjectively with Lytoceras by Hoffmann (2010).
Biasaloceras was named by Drushchits (1953).

It was synonymized subjectively with Lytoceras by Hoffmann (2010).

It was assigned to Lytoceratidae by Arkadiev et al. (2000).
Valentolytoceras was named by Besnossov (1958).

It was synonymized subjectively with Lytoceras by Hoffmann (2010).
Dinolytoceras was named by Besnossov (1958).

It was synonymized subjectively with Lytoceras by Hoffmann (2010).
Thysanoceras was named by Hyatt (1867). It is not extant. Its type is Ammonites cornucopia.

It was synonymized subjectively with Lytoceras by Hoffmann (2015).

Synonymy list

Year	Name and author
1865	Lytoceras Suess
1867	Thysanoceras Hyatt pp. 86, 96
1875	Ammonites (Lytoceras) Meneghini
1895	Lytoceras Stanton p. 75
1905	Thysanolytoceras Buckman p. 148
1920	Lytoceras (Kallilytoceras) Fucini
1921	Kallilytoceras Buckman
1923	Litoceras Böse p. 126
1926	Crenilytoceras Buckman
1926	Orcholytoceras Buckman
1927	Eulytoceras Spath
1927	Hemilytoceras Spath
1927	Metalytoceras Spath
1927	Pterolytoceras Spath
1951	Thysanolytoceras Jeannet p. 30
1953	Biasaloceras Drushchits
1958	Dinolytoceras Besnossov
1958	Valentolytoceras Besnossov
1960	Lytoceras Imlay p. 195
1962	Thysanolytoceras Collignon
1969	Lytoceras Westermann p. 42
1970	Lytoceras Imlay and Jones p. B3
1970	Lytoceras Wiedmann p. 992
1975	Lytoceras Förster p. 143
1975	Lytoceras Murphy p. 16
1975	Eulytoceras Murphy p. 18
1983	Lytoceras Förster and Weier p. 55
1993	Lytoceras Avram and Gradinaru p. 671
1994	Lytoceras Zeiss et al. p. 370
1996	Lytoceras Reboulet p. 190
1996	Eulytoceras Wright et al. p. 2
1996	Hemilytoceras Wright et al. p. 2
1996	Lytoceras Wright et al. p. 2
1996	Metalytoceras Wright et al. p. 2
1996	Pterolytoceras Wright et al. p. 2
1998	Lytoceras Blau p. 201
2000	Biasaloceras Arkadiev et al. p. 97
2000	Eulytoceras Landra et al. p. 34
2002	Eulytoceras Sepkoski
2002	Hemilytoceras Sepkoski
2002	Lytoceras Sepkoski
2002	Metalytoceras Sepkoski
2002	Pterolytoceras Sepkoski
2003	Lytoceras Meister and Friebe
2004	Lytoceras Lukeneder p. 49
2006	Lytoceras Alsen p. 123
2006	Lytoceras Hillebrandt p. 46
2007	Lytoceras Szives p. 48
2010	Lytoceras Hoffmann p. 24
2012	Lytoceras Galácz and Kassai
2013	Lytoceras Grigore p. 90
2023	Lytoceras Whicher et al. p. 219

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Cephalopoda	Cuvier 1797

Rank	Name	Author
subclass	Ammonoidea	()
order	Ammonitida
suborder	Ammonitina	Hyatt 1889
superfamily	Lytoceratoidea	(Neumayr 1875)
family	Lytoceratidae	Neumayr 1875
subfamily	Lytoceratinae	Neumayr 1875
genus	Lytoceras	Suess 1865

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.

G. †Lytoceras Suess 1865

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Subg. †Lytoceras (Argonauticeras) Anderson 1938

Subg. †Lytoceras (Derolytoceras) Rosenberg 1909

†Derolytoceras annulosum Monestier 1931

†Derolytoceras tortum Quenstedt 1885

Subg. †Lytoceras (Saturnoceras) Anderson 1938

†Lytoceras (Saturnoceras) saturnale Anderson 1938

Subg. †Lytoceras (Trachylytoceras) Buckman 1913

†Lytoceras (Trachylytoceras) sepositum Meneghini 1875

†Trachylytoceras nitidum Young and Bird 1828

†Lytoceras album Quenstedt 1857

†Lytoceras aulaeum Anderson 1938

†Lytoceras baconicum Vadasz 1910

†Lytoceras batesi Trask 1855

†Lytoceras belliseptatiforme Collignon 1962

†Lytoceras celticum Geyer 1886

†Lytoceras colusaense Anderson 1945

†Lytoceras cornucopia Young and Bird 1822

†Lytoceras crenatum Buckman 1926

†Lytoceras elegans Rǎileanu 1953

†Lytoceras eudesianum d'Orbigny 1846

†Lytoceras eudesianum adeloides Kudernatsch 1852

†Lytoceras fimbriatoides Gemmellaro 1884

†Lytoceras francisci Oppel 1865

†Lytoceras fuggeri Geyer 1893

†Lytoceras furcicrenatum Buckman 1928

†Lytoceras galatiforme Rakús and Guex 2002

†Lytoceras huberti Anderson 1945

†Lytoceras juilleti d'Orbigny 1841

Invalid names: Lytoceras obliquestrangulatum Kilian 1888 [synonym]

†Lytoceras lexeni Toula 1911

†Lytoceras liebigi Oppel 1865

Invalid names: Ammonites adelae d'Orbigny 1848 [replaced]

†Lytoceras linneanum d'Orbigny 1846

†Lytoceras montanum Oppel 1865

†Lytoceras municipale Oppel 1865

†Lytoceras orsinii Gemmellaro 1872

†Lytoceras ovimontanum Geyer 1893

†Lytoceras perplexum Meister et al. 2011

†Lytoceras pictaviense d'Orbigny 1846

†Lytoceras polycyclum Neumayr 1871

†Lytoceras praesublineatum Fucini 1899

†Lytoceras rex Waagen 1875

†Lytoceras rhodanicum Monestier 1931

†Lytoceras richei Sayn 1901

†Lytoceras salebrosum Pompeckj 1896

†Lytoceras saturnale Anderson 1938

†Lytoceras schlosseri Krenkel 1910

Invalid names: Lytoceras hennigi Zwierzycki 1914 [synonym]

†Lytoceras secernendum De Stefani 1887

†Lytoceras siemensi Denckmann 1887

†Lytoceras strambergensis Oppel 1868

†Lytoceras subfimbriatum d'Orbigny 1841

†Lytoceras subfrancisci Surani 1964

Invalid names: Lytoceras vaceki Géczy 1967 [synonym]

†Lytoceras sublineatum Oppel 1862

†Lytoceras subsequens Karakasch 1907

†Lytoceras sutile Oppel 1863

†Lytoceras taharoaense Stevens 1985

†Lytoceras traski Anderson 1938

†Lytoceras trompianum Hauer 1861

†Lytoceras villae Meneghini 1874

Invalid names: Kallilytoceras residuum Wiedenmayer 1977 [synonym]

†Lytoceras vogdti Karakasch 1907

Invalid names: Biasaloceras Drushchits 1953 [synonym], Crenilytoceras Buckman 1926 [synonym], Dinolytoceras Besnossov 1958 [synonym], Eulytoceras Spath 1927 [synonym], Hemilytoceras Spath 1927 [synonym], Kallilytoceras Buckman 1921 [synonym], Metalytoceras Spath 1927 [synonym], Orcholytoceras Buckman 1926 [synonym], Pterolytoceras Spath 1927 [synonym], Saturnoceras Anderson 1938 [synonym], Thysanoceras Hyatt 1867 [synonym], Thysanolytoceras Buckman 1905 [synonym], Valentolytoceras Besnossov 1958 [synonym]

†Lytoceras fimbriatum Sowerby 1817

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Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
height	5	53.3	36.0	75.0	56.0	19.5
diameter	5	128.4	86.0	180.0	140.0	42.7
inflation	5	44.1	28.0	60.0	51.0	16.5
shell height	61	31.6	6.50	580.0	29.5	102.5
shell diameter	61	80.2	19.9	1500.0	75.5	192.6
shell inflation	61	34.3	7.30	630.0	38.0	103.8

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 Semicostatum to the top of the Early/Lower Albian or 196.50000 to 109.00000 Ma

Collections (1146 total)

Time interval	Ma	Country or state	Original ID and collection number
Oldest occurrences
Early/Lower Jurassic	201.4 - 174.7	Italy (Trento)	Ammonites fimbriatus (232106)
Early/Lower Jurassic - Middle Jurassic	201.4 - 161.5	Indonesia	L. sp. (132795)
Hettangian - Sinemurian	201.3 - 190.8	Romania	L. lexeni (219456)
Late/Upper Hettangian - Early/Lower Sinemurian	201.3 - 189.6	Canada (British Columbia)	L. sp. (53649)
Sinemurian - Early/Lower Pliensbachian	199.3 - 183.0	Austria	L. fimbriatum (218907) L. sp., L. fimbriatum, L. fimbriatoides (218908)
Sinemurian - Pliensbachian	199.3 - 182.7	Austria	L. fuggeri, Derolytoceras tortum (218903)
Early/Lower Sinemurian	196.5 - 189.6	Slovakia	L. sp. 1, L. fimbriatoides, L. perplexum (195484)
Late/Upper Sinemurian	196.5 - 189.6	Austria	Derolytoceras sp., L. fuggeri (196516) L. fimbriatoides (196518) L. sp. (218928)
Late/Upper Sinemurian	196.5 - 189.6	Hungary (Veszprém Megye)	L. sp. (78278)
Late/Upper Sinemurian	196.5 - 189.6	Morocco	L. celticum (200470 200476 200507 200508 200509 200510 200517 200520 200522 200524 200527 200581 200582 200583 200585 200587 200592 200597 200600 200601 200604 200605 200610) L. sp. (200461)
Youngest occurrences
Time interval	Ma	Country or state	PBDB collection number
Early/Lower Aptian	121.4 - 122.46	Tanzania	L. subsequens, L. schlosseri (174609)
Early/Lower Aptian	121.4 - 122.46	Italy	L. sp. (82829 82831 82833 82838) L. sp., Eulytoceras phestum, Eulytoceras anisoptychum (82835)
Early/Lower Aptian	121.4 - 122.46	Antarctica	Eulytoceras sp. (160142)
Albian - Aptian	113.0 - 113.0	Antarctica (Alexander Island)	Eulytoceras sp. (2079)
Albian	113.0 - 100.5	Antarctica	L. sp. (64200 64212)
Albian	113.0 - 100.5	Egypt	L. vicinum (171272)
Albian	113.0 - 100.5	Madagascar	Eulytoceras komihevitraense, Thysanolytoceras vicimum (98244) L. mahafalense (98264) Thysanolytoceras vicinum (98245)
Early/Lower Albian	112.03 - 109.0	USA (Alaska)	L. sp. (88908)
Early/Lower Albian	112.03 - 109.0	Madagascar	Thysanolytoceras strambergense, L. obliquestrangulatum (98233)
Early/Lower Albian	112.03 - 109.0	South Africa	L. sp. (66073)