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Trionyx gregarius
Taxonomy
Amyda gregaria was named by Gilmore (1934). Its type specimen is AMNH 6734, a partial skeleton, and it is a 3D body fossil. Its type locality is Houldjin Gravels (1930 AMNH), which is in a Houldjinian terrestrial gravel in China.
It was recombined as Trionyx gregarius by Georgalis and Joyce (2017).
It was recombined as Trionyx gregarius by Georgalis and Joyce (2017).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1934 | Amyda gregaria Gilmore pp. 1-14 figs. 1-8 |
| 1963 | Amyda gregaria Yeh |
| 1999 | Rafetus gilmorei Chkhikvadze |
| 2008 | Amyda gregaria Brinkman et al. p. 73 |
| 2017 | Trionyx gregarius Georgalis and Joyce |
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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.
†Trionyx gregarius Gilmore 1934
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Invalid names: Rafetus gilmorei Chkhikvadze 1999 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. L. Georgalis and W. G. Joyce 2017 | “Trionyx” gregarius can be diagnosed as a member of Pan-Trionychidae by the full list of characters provided for that clade above. Among Paleogene pan-trionychids from Asia, “T.” gregarius can be most readily differentiated by small size, lacking a preneural, a midline contact of the posterior costals, broad costals VIII, a finely crenulated sculpturing, and well-formed plastral callosities. |