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Augustasaurus hagdorni
Taxonomy
Augustasaurus hagdorni was named by Sander et al. (1997). Its type specimen is FMNH PR 1974 and is not a trace fossil. Its type locality is Muller Canyon, which is in an Illyrian marginal marine mudstone in the Favret Formation of Nevada.
Synonymy list
| Year | Name and author |
|---|---|
| 1997 | Augustasaurus hagdorni Sander and et al. |
| 2001 | Augustasaurus hagdorni O'Keefe p. 9 |
| 2002 | Augustasaurus hagdorni Rieppel et al. pp. 578-588 figs. 1-7 |
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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.
†Augustasaurus hagdorni Sander 1997
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. Rieppel et al. 2002 | Pistosaur with maxillary tooth row extending backwards beyond posterior margin of orbit to level below anterior corner of upper temporal fossa; frontals paired; frontal entering anteromedial margin of upper temporal fossa without forming descending flange; para-basisphenoid with ventrally projecting sagittal crest; posterior palatine vacuities present (convergent in Plesiosaurus); epipterygoid broad dorsally; dorsal neural spines terminating in distinct “saw-cut” rugosities, middle dorsal vertebrae with double facets of unfinished bone near posterior end of neural spine; posteriorly slanted transverse processes with round rib articular facets. |
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988, Bush and Bambach 2015, Kiessling 2004 | |||||