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Hyphalosaurus lingyuanensis
Taxonomy
Hyphalosaurus lingyuanensis was named by Gao et al. (1999). Its type specimen is IVPP V11075/BMNHC V398 (counterpart), a skeleton (nearly complete skull, mandibles, and well-preserved postcranial skeleton), and it is a 3D body fossil. Its type locality is Fanzhangzi, Lingyuan, which is in a Barremian/Aptian lacustrine horizon in the Yixian Formation of China. It is the type species of Hyphalosaurus.
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1999 | Hyphalosaurus lingyuanensis Gao et al. |
| 1999 | Sinohydrosaurus lingyuanensis Li et al. |
| 2008 | Hyphalosaurus lingyuanensis Gao and Ksepka p. 749 |
| 2010 | Hyphalosaurus lingyuanensis Zhou and Wang |
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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.
†Hyphalosaurus lingyuanensis Gao et al. 1999
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Invalid names: Sinohydrosaurus lingyuanensis Li et al. 1999 [objective synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. -Q. Gao and D. T. Ksepka 2008 | Hyphalosaurid choristodere differing from the congeneric species H. baitaigouensis by possession of the following autapomorphies: postorbital part of skull substantially shorter than anterior part including snout and orbit; frontal-parietal suture located at level slightly posterior to the anterior border of supratemporal fenestrae; postorbitofrontal not contacting parietal; elongated neck consisting of 19 cervical vertebrae; dorsal vertebrae 16 in number; interclavicle essentially T-shaped, with great reduction of anteromedial process; iliac blade oriented horizontally. |