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Eoptolamnidae

Chondrichthyes - Lamniformes - Eoptolamnidae

Synonymy list
YearName and author
2008Eoptolamnidae Kriwet et al. p. 280

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classChondrichthyes
RankNameAuthor
subclassElasmobranchiiBonaparte 1838
infraclassEuselachii()
NeoselachiiCompagno 1977
superorderGaleomorphiiCompagno 1973
orderLamniformesBerg 1958
familyEoptolamnidae
familyEoptolamnidae

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. †Eoptolamnidae Kriwet et al. 2008
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G. †Eoptolamna Kriwet et al. 2008
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Eoptolamna eccentrolopha Kriwet et al. 2008
Eoptolamna supracretacea Guinot et al. 2013
G. †Leptostyrax Williston 1900
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Invalid names: Leptostyrax bicuspidatus Williston 1900 [synonym]
Invalid names: Megarhizodon Sokolov 1978 [synonym]
Diagnosis
ReferenceDiagnosis
J. Kriwet et al. 2008Lamniform sharks only known by isolated teeth and characterized by the following combination of characters: tearing-type dentition with very weak gradient monognathic heterodonty; a single pair of parasymphyseals(?) present; mesiodistally compressed teeth, with generally a single pair of lateral cusplets; robust roots with short branches; lingual protuberance more or less massive; with nutritive groove, which might be secondarily closed.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobileo
Life habit: nektonico
Diet: carnivoreo
Created: 2009-07-21 07:05:21
Modified: 2009-07-21 09:05:21
Source: o = order, subp = subphylum
References: Hendy et al. 2009, Carroll 1988, Wagner 2023

Age range: base of the Early/Lower Barremian to the top of the Early/Lower Campanian or 130.00000 to 70.60000 Ma

Collections (43 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Barremian130.0 - 125.45Spain (Aragón) Protolamna sokolovi (28196)
Aptian125.0 - 113.0Japan (Iwate) Plicatolamna macrorhiza (210764 210765)
Late/Upper Aptian - Early/Lower Albian122.46 - 109.0USA (Texas) Leptostyrax bicuspidatus (14375)
Albian113.0 - 100.5USA (Texas) Leptostyrax bicuspidatus (27604 27606 27613)
Albian113.0 - 100.5Australia (Western Australia) Leptostyrax sp. (90688)
Early/Lower Albian112.03 - 109.0USA (Texas) Leptostyrax sp. (27774)
Late/Upper Albian105.3 - 99.6USA (Texas) Leptostyrax macrorhiza (52126 213302 213307)
Late/Upper Albian105.3 - 99.6Lithuania Odontaspis macrorhiza (213709 213710 213717)
Late/Upper Albian105.3 - 99.6United Kingdom (England) Leptostyrax sp. (213347 213354)
Cenomanian100.5 - 93.9Australia (Western Australia) Leptostyrax sp. (215794)
Late/Upper Cretaceous100.5 - 66.0Japan (Hokkaido) Plicatolamna macrorhiza (161435)
Late/Upper Cenomanian99.6 - 93.5Lithuania Odontaspis macrorhiza (90732 213719 213720 213721)
Middle Cenomanian99.6 - 93.5Russian Federation (Volgograd) Megarhizodon macrorhiza (92399)
Turonian93.9 - 89.8USA (Kansas) Leptostyrax crassidens (102879)
Turonian93.9 - 89.8USA (South Dakota) Leptostyrax compressidens (181902)
Early/Lower Santonian - Middle Santonian85.8 - 83.5USA (New Mexico) Eoptolamnidae indet. (52037)
Late/Upper Santonian85.8 - 83.5France (Aisne) Eoptolamna supracretacea (213563)
Late/Upper Santonian85.8 - 83.5United Kingdom (England) Eoptolamna supracretacea (213377 213381)
Middle Santonian85.8 - 83.5United Kingdom (England) Eoptolamna supracretacea (213376)
Early/Lower Campanian83.5 - 70.6Sweden (Skåne) Leptostyrax sp. (74335)
Early/Lower Campanian83.5 - 70.6France (Somme) Eoptolamna supracretacea (213565 213566)
Early/Lower Campanian83.5 - 70.6Lithuania Odontaspis macrorhiza (90731 213722)
Early/Lower Campanian83.5 - 70.6France (Ardennes) Eoptolamna supracretacea (157587)
Early/Lower Campanian83.5 - 70.6United Kingdom (England) Eoptolamna supracretacea (213378 213379 213382 213561)
Early/Lower Campanian83.5 - 70.6France (Aisne) Eoptolamna supracretacea (213559 213560)