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Eoptolamnidae
Taxonomy
Eoptolamnidae was named by Kriwet et al. (2008).
It was assigned to Lamniformes by Kriwet et al. (2008).
It was assigned to Lamniformes by Kriwet et al. (2008).
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Eoptolamnidae Kriwet et al. p. 280 |
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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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†Leptostyrax macrorhiza Cope 1875
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Invalid names: Leptostyrax bicuspidatus Williston 1900 [synonym]
Invalid names: Megarhizodon Sokolov 1978 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Kriwet et al. 2008 | Lamniform 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. |