| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Eurysternidae
Taxonomy
Eurysternidae was named by Dollo (1886). It was considered monophyletic by Anquetin et al. (2017).
It was assigned to Eucryptodira by Joyce (2000), Karl et al. (2012) and Anquetin and Joyce (2014); and to Thalassochelydia by Anquetin et al. (2017) and Püntener et al. (2020).
It was assigned to Eucryptodira by Joyce (2000), Karl et al. (2012) and Anquetin and Joyce (2014); and to Thalassochelydia by Anquetin et al. (2017) and Püntener et al. (2020).
Subtaxa
Synonyms
|
Synonymy list
| Year | Name and author |
|---|---|
| 1886 | Eurysternidae Dollo |
| 1915 | Plesiochelys minima Oertel |
| 2000 | Eurysternidae Joyce p. 686 |
| 2012 | Eurysternidae Karl et al. |
| 2014 | Eurysternidae Anquetin and Joyce |
| 2017 | Eurysternidae Anquetin et al. |
| 2020 | Eurysternidae Püntener et al. |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
Fm. †Eurysternidae Dollo 1886
show all | hide all
G. †Idiochelys Meyer 1839
hide
†Idiochelys fitzingeri Meyer 1839
+
Invalid names: Chelonemys ovata Jourdan 1862 [synonym], Chelonemys plana Jourdan 1862 [synonym], Idiochelys wagneri Meyer 1846 [synonym]
G. †Palaeomedusa Meyer 1860
hide
†Palaeomedusa testa von Meyer 1860
+
Invalid names: Eurysternum crassipes Wagner 1861 [objective synonym]
Invalid names: Plesiochelys minima Oertel 1915 [nomen dubium]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Anquetin et al. 2017 | Representatives of the Thalassochelydia are currently diagnosed relative to other turtles by the following derived characters: presence of a long posteroventral process of the parietal that forms the posterior margin of the foramen nervi trigemini and excludes the prootic from that foramen, and the development of a ventrally infolding ridge on the posterior surface of the processus articularis of the quadrate. The presence of three cervical scutes is probably also a diagnostic feature of the group. |