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Simoedosaurus
Taxonomy
Simoedosaurus was named by Gervais (1877).
It was assigned to Choristodera by Brown (1905); to Choristodera by Sigogneau-Russell and Russell (1978); to Champsosauridae by Erickson (1987), Carroll (1988), Gao and Fox (2005); to Choristodera by Ezcurra (2016); to Neochoristodera by Matsumoto et al. (2007), Matsumoto and Evans (2010), Matsumoto et al. (2013), Matsumoto et al. (2019); and to Simoedosauridae by Evans (1990), Evans (1991), Gao and Fox (1998), Brownstein (2022).
It was assigned to Choristodera by Brown (1905); to Choristodera by Sigogneau-Russell and Russell (1978); to Champsosauridae by Erickson (1987), Carroll (1988), Gao and Fox (2005); to Choristodera by Ezcurra (2016); to Neochoristodera by Matsumoto et al. (2007), Matsumoto and Evans (2010), Matsumoto et al. (2013), Matsumoto et al. (2019); and to Simoedosauridae by Evans (1990), Evans (1991), Gao and Fox (1998), Brownstein (2022).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1877 | Simoedosaurus Gervais |
| 1877 | Simoedosaurus lemoinei Gervais |
| 1884 | Simoedosaurus peroni Lemoine |
| 1884 | Simoedosaurus remensis Lemoine |
| 1884 | Simoedosaurus suessonniensis Lemoine |
| 1905 | Simoedosaurus Brown |
| 1909 | Champsosaurus lemoinei Dollo p. 108 |
| 1978 | Simoedosaurus Sigogneau-Russell and Russell |
| 1987 | Simoedosaurus Erickson p. 237 |
| 1988 | Simoedosaurus Carroll |
| 1990 | Simoedosaurus Evans |
| 1991 | Simoedosaurus Evans |
| 1998 | Simoedosaurus Gao and Fox p. 312 |
| 2005 | Simoedosaurus Gao and Fox p. 438 |
| 2007 | Simoedosaurus Matsumoto et al. p. 342 |
| 2010 | Simoedosaurus Matsumoto and Evans |
| 2013 | Simoedosaurus Matsumoto et al. |
| 2016 | Simoedosaurus Ezcurra pp. 270, 282 |
| 2019 | Simoedosaurus Matsumoto et al. |
| 2022 | Simoedosaurus Brownstein |
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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.
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 differing from Ikechosaurus and Tchoiria as follows: snout significantly wider and proportionally shorter; width of interorbital table greater than diameter of orbit; mandibular symphysis confined to anterior end of dentary; splenial extending anteriorly to, but not entering symphysis |
Measurements
No measurements are available
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| Source: subc = subclass, subp = subphylum, p = phylum | |||||
| References: Carroll 1988, Kiessling 2004 | |||||
Age range: base of the Late/Upper Paleocene to the top of the Ypresian or 59.24000 to 48.07000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Paleocene | France (Champagne-Ardenne) | S. sp. (117931) | |
| Late/Upper Paleocene | Kazakhstan (Chimkent) | S. sp. (48888) | |
| Ypresian | Belgium (Hainaut) | Champsosaurus lemoinei (87947) | |
| Ypresian | Kazakhstan (Chimkent) | S. sp. (49051) | |
| Ypresian | Belgium (Brabant) | S. lemoinei (144103) |