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Simoedosauridae
Taxonomy
Simoedosauridae was named by Lemone (1884).
It was assigned to Choristodera by Evans (1990), Evans (1991) and Gao and Fox (1998); and to Neochoristodera by Gao and Fox (2005) and Gao and Li (2007).
It was assigned to Choristodera by Evans (1990), Evans (1991) and Gao and Fox (1998); and to Neochoristodera by Gao and Fox (2005) and Gao and Li (2007).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1884 | Simoedosauridae Lemone |
| 1990 | Simoedosauridae Evans |
| 1991 | Simoedosauridae Evans |
| 1998 | Simoedosauridae Gao and Fox p. 311 |
| 2005 | Simoedosauridae Gao and Fox p. 439 |
| 2007 | Simoedosauridae Gao and Li p. 270 |
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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. †Simoedosauridae Lemone 1884
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G. †Kosmodraco Brownstein 2022
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†Kosmodraco dakotensis Erickson 1987
†Kosmodraco magnicornis Brownstein 2022
G. †Simoedosaurus Gervais 1877
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Invalid names: Simoedosaurus lemoinei Gervais 1877 [nomen dubium], Simoedosaurus peroni Lemoine 1884 [nomen dubium], Simoedosaurus remensis Lemoine 1884 [nomen dubium], Simoedosaurus suessonniensis Lemoine 1884 [nomen dubium]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. -Q. Gao and R. C. Fox 1998 | Choristoderes that differ from closely related Champsosauridae by the following autapomorphies: snout elongate but less than 1/2 of skull length; postorbital/postfrontal always fused to form postorbitofrontal; reduced contact of parietal with postorbital/postfrontal complex; postorbital process complex; postorbital process of jugal low or lost; interpterygoid vacuity small, posteriorly located, not enclosed by pterygoid posteriorly; suborbital fenestra subtriangular with straight medial border; posterior openings of internal carotid artery penetrating parasphenoid and opening ventrally; posttemporal fenestra closed; paraoccipital process slightly deflected ventrally; mandibular symphysis anteroposteriorly short, restricted to anterior 1/3 of dentary tooth row; marginal tooth sockets transversely expanded |