| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Protoshachemys
Discussion
Etymology: Genus name from Greek protos first, primitive to denote that the taxon is more primitive than Shachemys
Taxonomy
Protoshachemys was named by Tong et al. (2019). Its type is Protoshachemys rubra.
It was assigned to Shachemydinae by Tong et al. (2019).
It was assigned to Shachemydinae by Tong et al. (2019).
Species
P. rubra (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2019 | Protoshachemys Tong 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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. Tong et al. 2019 | a genus of Adocidae; with a combination of primitive and derived characters that differ from all other members of that family, as follows: shell surface smooth with sparse pores; carapace flat with a serrated posterior margin; nuchal roughly as long as wide; neural series reduced, narrow neurals with a tetragonal neural 1 followed by a hexagonal neural 2; two suprapygals, the first one much smaller than the second; cervical scute narrow; vertebral 1 not extending to the peripheral 2; lateral marginals extending onto the costals 1–5, marginal 11 and 12 elongate and greatly overlapping the suprapygal 2 and also slightly the costal 8; plastron with truncated anterior margin, entoplastron shortened anteriorly, a hinge between epiplastra and entoplastron/hyoplastra absent. |
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988, Uetz 2005 | |||||
Age range: Late/Upper Barremian or 130.00000 to 125.45000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Barremian | Thailand (Changwat) | P. sp., P. rubra (201767) |