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Plesiotylosaurus
Taxonomy
Plesiotylosaurus was named by Camp (1942) [Sepkoski's age data: K Maes-u Sepkoski's reference number: 1069].
It was assigned to Tylosaurinae by Camp (1942); to Prognathodontini by Russell (1967); to Mosasauridae by McDowell and Bogert (1954), Carroll (1988); to Squamata by Sepkoski (2002); and to Mosasaurinae by Dortangs et al. (2002), Bell and Polcyn (2005), Driscoll et al. (2019).
It was assigned to Tylosaurinae by Camp (1942); to Prognathodontini by Russell (1967); to Mosasauridae by McDowell and Bogert (1954), Carroll (1988); to Squamata by Sepkoski (2002); and to Mosasaurinae by Dortangs et al. (2002), Bell and Polcyn (2005), Driscoll et al. (2019).
Species
Entered
by J. Sepkoski on 2003-01-23; modified by J. Marcot on 2019-12-10
Synonymy list
| Year | Name and author |
|---|---|
| 1942 | Plesiotylosaurus Camp p. 18 |
| 1954 | Plesiotylosaurus McDowell and Bogert p. 132 |
| 1967 | Plesiotylosaurus Russell p. 167 |
| 1988 | Plesiotylosaurus Carroll |
| 2002 | Plesiotylosaurus Dortangs et al. |
| 2002 | Plesiotylosaurus Sepkoski |
| 2005 | Plesiotylosaurus Bell and Polcyn p. 189 |
| 2019 | Plesiotylosaurus Driscoll et al. |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. L. Camp 1942 | Like Tylosaurus, but without extended rostrum, with larger pterygoid teeth, expanded prefrontals and shorter, stouter quadrate. |
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Kiessling 2004, Gervais 1852, Hendy et al. 2009 | |||||
Age range: Maastrichtian or 72.20000 to 66.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Maastrichtian | USA (California) | P. crassidens (76738) | |
| Maastrichtian | USA (California) | P. crassidens (103992) |