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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Cordichelys
Taxonomy
Cordichelys was named by Gaffney et al. (2011). Its type is Podocnemis antiqua.
It was assigned to Bairdemydita by Gaffney et al. (2011); and to Podocnemididae by de la Fuente et al. (2014), de Lapparent de Broin et al. (2018) and Cherney et al. (2020).
It was assigned to Bairdemydita by Gaffney et al. (2011); and to Podocnemididae by de la Fuente et al. (2014), de Lapparent de Broin et al. (2018) and Cherney et al. (2020).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Cordichelys Gaffney et al. |
| 2014 | Cordichelys de la Fuente et al. |
| 2018 | Cordichelys de Lapparent de Broin et al. |
| 2020 | Cordichelys Cherney et al. p. 32 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. D. Cherney et al. 2020 | Cordichelys is a podocnemidid of the Tribe Stereogenyini that has in common with all other member secondary palate consisting of medially projecting expansions of the maxillae and palatines with a cleft separating them at the midline. Cordichelys is known from the skull, shell, and pelves and is diagnosed by a shallow interorbital depression, a large ventral process of the postorbital in the septum orbitotemporale that contacts a moderate dorsal extension of the palatine preventing jugal-pterygoid contact, and a eustachian tube confluent with the fenestra postoticum. It differs from Lemurchelys, Shweboemys, and Stereogenys in possessing arched, rather than straight, medial edges of the palatal cleft in ventral view. It differs from Bairdemys in possessing a low, rather than high, ventral convexity on the triturating surface of the secondary palate, an open, rather than closed, antrum postoticum (shared with Latentemys), and frontal and prefrontal that in profile are flat, rather than rounded (shared with Shweboemys). It differs from Stereogenys in possessing a less well-developed secondary palate, shorter prefrontals that contribute less to the dorsal margin of the orbit, an interorbital depression in the prefrontals, and a less extensive dorsal extension of the palatine that does not contact the parietal. If the lower jaw UMMP 97531 described below indeed pertains to Cordichelys, then additionally it can be differentiated by a heartshaped triturating surface that is less expanded than in Stereogenys, but more expanded than in Bairdemys. It further differs from Stereogenys in having an evenly curved anterolateral outline in dorsal view, a median ridge running across the triturating surface with depressions on either side of it, and a more emarginated posterior margin of the triturating surface. |
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009, Uetz 2005 | |||||
Age range: base of the Lutetian to the top of the Priabonian or 47.80000 to 33.90000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lutetian | Spain (Catalonia) | C. sp. (196697) | |
| Lutetian | Western Sahara | C. antiqua (235060) | |
| Priabonian | Egypt | Podocnemis antiqua (79700) | |
| Priabonian | Egypt (Fayum) | C. antiqua (215296) C. sp. (215295 215297) | |
| Priabonian | Western Sahara | C. antiqua (159113) |