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Chelydropsis
Taxonomy
Chelydropsis was named by Peters (1868). Its type is Chelydropsis carinata.
It was assigned to Chelydridae by Carroll (1988), de Lapparent de Broin (2000), Böhme (2008); to Chelydropsinae by Mlynarski (1980), Mlynarski (1981), Mlynarski (1984), Klein and Mors (2003), Hutchison (2008); to Panchelydridae by Joyce (2016); and to Chelydridae by Joyce et al. (2022), Pappa et al. (2024).
It was assigned to Chelydridae by Carroll (1988), de Lapparent de Broin (2000), Böhme (2008); to Chelydropsinae by Mlynarski (1980), Mlynarski (1981), Mlynarski (1984), Klein and Mors (2003), Hutchison (2008); to Panchelydridae by Joyce (2016); and to Chelydridae by Joyce et al. (2022), Pappa et al. (2024).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1868 | Chelydropsis Peters |
| 1960 | Macrocephalochelys Pidoplichko and Tarashchuk |
| 1980 | Chelydropsis Mlynarski |
| 1981 | Chelydropsis Mlynarski |
| 1984 | Chelydropsis Mlynarski |
| 1988 | Chelydropsis Carroll |
| 1988 | Macrocephalochelys Carroll |
| 2000 | Chelydropsis de Lapparent de Broin |
| 2003 | Chelydropsis Klein and Mors p. 14 |
| 2008 | Chelydropsis Böhme p. 168 |
| 2008 | Chelydropsis Hutchison |
| 2016 | Chelydropsis Joyce |
| 2022 | Chelydropsis Joyce et al. |
| 2024 | Chelydropsis Pappa et al. |
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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. †Chelydropsis Peters 1868
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†Chelydropsis apellanizi Murelaga et al. 1999
†Chelydropsis aubasi Joyce et al. 2022
†Chelydropsis decheni Meyer 1852
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Invalid names: Chelydropsis sanctihenrici Broin 1977 [synonym]
†Chelydropsis heweneggensis Pappa et al. 2024
†Chelydropsis kusnetzovi Chkhikvadze 1985
†Chelydropsis manuascensis Bergounioux 1936
†Chelydropsis murchisoni Bell 1836
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Invalid names: Chelydra allingensis Fuchs 1939 [synonym], Chelydropsis carinata Peters 1868 [synonym], Chelydropsis staeschei Mlynarski 1980 [synonym], Trionyx sansaniensis Bergounioux 1935 [synonym]
†Chelydropsis pontica Pidoplichko and Tarashchuk 1960
†Chelydropsis sansaniensis Bergounioux 1935
Invalid names: Chelydropsis murchisoni staeschei Mlynarski 1980 [synonym], Macrocephalochelys Pidoplichko and Tarashchuk 1960 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. G. Joyce et al. 2022 | Chelydropsis aubasi sp. nov. can be diagnosed as a representative of Chelydroidea by the development of a cruciform plastron, strap-like epiplastra that cover the lateral margins of the hyoplastra, the absence of pectorals, and the loss of a midline contact of the abdominals. Chelydropsis aubasi can furthermore be diagnosed as a representative of Pan-Chelydridae by the presence of a low carapace formed by notably thin neurals and costals, vertebrals and pleurals that form plications along their anterior margins, an “epiplastral beak” (i.e., an upturned lip formed along the anterior margin of the plastron), presence of intergulars (homoplastically developed in other chelydroids), strap-like xiphiplastra that cover the lateral margins of the hypoplastra, and an anal that covers the posterior portions of the hypoplastron. | |
| I. Pappa et al. 2024 | Following the scheme of Joyce (2016), the specimen described herein is a member of Pan- Chelydridae because of the combination of the following diagnostic features: the absence of nasals( symplesiomorphy), exclusion of the frontals from the orbits, parietal does not contact squamosal, reduced cruciform plastron, absence of pectorals and extragulars, abdominals not in contact in the median line of the plastron, presence of three contiguous inframarginals, presence of an enclosed incisura columella auris, tongued-shaped projections of the epiplastra, paired intergulars |