Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Arundelemys dardeni
Taxonomy
Arundelemys dardeni was named by Lipka et al. (2006). Its type specimen is USNM 497740, a partial skull, and it is a 3D body fossil. Its type locality is Cherokee-Sanford Brick Clay Pit (USNM Loc. 41614, 41615), which is in an Aptian wet floodplain claystone/claystone in the Arundel Clay Formation of Maryland. It is the type species of Arundelemys.
Synonymy list
Year | Name and author |
---|---|
2006 | Arundelemys dardeni Lipka et al. pp. 301-302 figs. 1-3 |
2015 | Arundelemys dardeni Joyce and Lyson |
2021 | Arundelemys dardeni Evers 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.
†Arundelemys dardeni Lipka et al. 2006
show all | hide all
Diagnosis
Reference | Diagnosis | |
---|---|---|
S. W. Evers et al. 2021 | Arundelemys dardeni can be diagnosed as a member of Paracryptodira based on the presence of a characteristic combination of derived and symplesiomorphic features. These include the presence of skull sculpturing (also present in some sinemydids; Brinkman & Peng, 1993; Zhou, Rabi & Joyce, 2014; and some xinjiangchelyids: Tong et al., 2019); a relatively strong lateral orbit orientation; the retention of relatively large nasals paired with their partial posterior separation by the anterior frontal processes (the nasals of early Testudinata or Meiolaniformes are in medial contact with one another across their entire length: Gaffney, 1990; Sterli, 2015; and the nasals of sinemydids are small: e.g., Rabi et al., 2013; Li et al., 2019); a unique combination of jugal features that includes a dorsally raised jugal position (as in xinjiangchelyids, but unlike in meiolaniforms; varies in sinemydids: see Brinkman & Wu, 1999; Li et al., 2019) and its exclusion from the orbital margin (unlike in sinemydids, xinjiangchelyids, meiolaniforms); retention of a posteriorly open incisura columellae auris; and a unique combination of traits surrounding the embedding of the carotid artery, including the presence of a carotid pit, absence of internal carotid artery embedding, and the absence of a palatine artery canal or interpterygoid vacuity indicating the reduction of the respective artery (retained in Uluops uluops among paracryptodires: Rollot, Evers & Joyce, 2021). |