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Psilotrachelosaurus
Taxonomy
Psilotrachelosaurus was named by Nopsca (1928) [Sepkoski's age data: Tr Ladi-l Tr Carn-l
Sepkoski's age data: Tr m Sepkoski's reference number: 746]. Its type is Psilotrachelosaurus toeplitschi.
It was corrected as Neusticosaurus by Nopsca (1928).
It was assigned to Lariosauridae by Lydekker (1889); to Neusticosauridae by Seeley (1892); to Pachypleuridae by Carroll (1988); to Pachycephalosauridae by Rieppel and Lin (1995); to Pachypleurosauridae by Nopsca (1928), Kuhn (1971), Sander (1989), Rieppel (1993), Rieppel (1995), Rieppel (2000); and to Notosauria by Sepkoski (2002).
It was corrected as Neusticosaurus by Nopsca (1928).
It was assigned to Lariosauridae by Lydekker (1889); to Neusticosauridae by Seeley (1892); to Pachypleuridae by Carroll (1988); to Pachycephalosauridae by Rieppel and Lin (1995); to Pachypleurosauridae by Nopsca (1928), Kuhn (1971), Sander (1989), Rieppel (1993), Rieppel (1995), Rieppel (2000); and to Notosauria by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1889 | Psilotrachelosaurus Lydekker p. 285 |
| 1892 | Psilotrachelosaurus Seeley pp. 603- 604 |
| 1928 | Psilotrachelosaurus Nopsca p. 31 |
| 1928 | Neusticosaurus Nopsca p. 43 |
| 1971 | Psilotrachelosaurus Kuhn p. 17 |
| 1988 | Psilotrachelosaurus Carroll |
| 1989 | Psilotrachelosaurus Sander |
| 1993 | Psilotrachelosaurus Rieppel p. 4 |
| 1995 | Psilotrachelosaurus Rieppel p. 213 |
| 1995 | Psilotrachelosaurus Rieppel and Lin p. 35 figs. Figure 27 |
| 2000 | Psilotrachelosaurus Rieppel |
| 2002 | Psilotrachelosaurus Sepkoski |
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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. †Psilotrachelosaurus Nopsca 1928
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. Rieppel 1993 | A small-sized pachypleurosaur sharing with the Serpianosaurus-Neusticosaurus clade the surface ornamentation on the
humerus but differing by the relatively short humerus, a more fully ossified carpus and tarsus (distal carpal/tarsal 4 present), and relatively broad ventral elements in the pelvic girdle. |
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum | |||||
| References: Bush and Bambach 2015, Carroll 1988, Hendy et al. 2009 | |||||
Collections
No collection or age range data are available