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Guizhouichthyosaurus tangae
Taxonomy
Guizhouichthyosaurus tangae was named by Cao et al. (2000). Its type specimen is Gmr 009, a partial skeleton (a well preserved skeleton lacking only the tail, most of the pelvis and the hindfins), and it is a 3D body fossil.
It was recombined as Shastasaurus tangae by Shang and Li (2009).
It was recombined as Shastasaurus tangae by Shang and Li (2009).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Guizhouichthyosaurus tangae Cao et al. figs. 2-4 |
| 2000 | Ghuizhouichthyosaurus tangae Yin et al. |
| 2002 | Cymbospondylus asiaticus Li and You p. 9 figs. 1, 2 |
| 2003 | Panjiangsaurus epicharis Chen and Cheng p. 229 figs. Pl. I, figs. 1-3 |
| 2006 | Guizhouichthyosaurus tangae Maisch et al. pp. 588-594 figs. 2-4 |
| 2009 | Shastasaurus tangae Shang and Li p. 191 |
| 2010 | Guizhouichthyosaurus tangae Maisch |
| 2016 | Guizhouichthyosaurus tangae Ji et al. p. 10 |
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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.
†Guizhouichthyosaurus tangae Cao et al. 2000
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Invalid names: Cymbospondylus asiaticus Li and You 2002 [synonym], Panjiangsaurus epicharis Chen and Cheng 2003 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. W. Maisch et al. 2006 | Large ichthyosaur, reaching more than 6 meters in total length; premaxilla without well-developed processus subnarialis but forming a long lanceolate processus supranarialis that forms a large part of the dorsal narial margin; naris very small, elliptical; maxilla reaches far anteriorly, long processus postnarialis that almost reaches the prefrontal; nasal extends to the middle of the orbit and posterolaterally contacts postfrontal; orbit of characteristic shape with convex anterior, concave dorsal and straight posterior and ventral margins; prefrontal small, forms only anterior third of dorsal orbital margin; postfrontal meets supratemporal externally, but postorbital forms a large part of the lateral margin of the temporal fenestra internally via a long posterodorsal process; deep triangular incisura postjugalis, jugal fails to meets quadratojugal externally, jugal-quadrato-jugal-contact covered by postorbital and squamosal; postorbital skull segment short, little more than half the length of the orbit in adults; frontal takes part in the anterior terrace of the temporal fenestra but is excluded from the fenestra by the parietal and postfrontal; frontals and parietals forms sharp ridges lateral to the area of the foramen parietale; parietals form a low and narrow sagittal crest; no transverse process on pterygoid, interpterygoid vacuity large; supraangular with deep fossa supraangularis that is continuous with the fossa dentalis; teeth thecodontously implanted, blunt, conical, and with very fine apicobasal striations but no carinae. |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||