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Ashleychelys
Taxonomy
Ashleychelys was named by Weems and Sanders (2014). Its type is Ashleychelys palmeri. It was considered monophyletic by Weems and Sanders (2014).
It was assigned to Cheloniidae by Weems and Sanders (2014); and to Pancheloniidae by Weems (2014).
It was assigned to Cheloniidae by Weems and Sanders (2014); and to Pancheloniidae by Weems (2014).
Species
A. palmeri (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Ashleychelys Weems |
| 2014 | Ashleychelys Weems and Sanders p. 84 |
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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. †Ashleychelys Weems and Sanders 2014
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†Ashleychelys palmeri Weems and Sanders 2014
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. E. Weems and A. E. Sanders 2014 | Moderately large sea turtle with a flattened and elongated skull and an anteroposteriorly elongated orbit; pre- frontals form the anterodorsal border of the orbit, whereas frontals form only a small portion of the dorsal rim of the or- bit; prominent brow ridges formed by the postorbitals lie above most of the dorsal rim of the orbit; quadrate turns strongly backward beneath squamosal; cavum tympani elongate, narrow, and tightly rounded at its posterior end; secondary palate mod- erately developed, with the vomer contributing about half of its length to the secondary palate; maxillary palate slightly ru- gose without pronounced troughs or ridges; pterygoid flanges ro- bustly developed; planar joint between the sixth and seventh cer- vical vertebrae; carapace moderately convex with a maximum length estimated to be about 55 cm, almost as wide as long, and with the third costals most elongate; vertebral scutes hexago- nal and about twice as wide as long; elongated costoperipheral fontanelles are persistently wide into adulthood; neurals exhibit a medial narrow low ridge unlike Carolinochelys wilsoni or Pro- colpochelys charlestonensis; carapace surface covered by an anastomosing pattern of grooves; hyoplastron and hypoplastron are angled sharply rather than gently upward away from the midline; xiphiplastra much narrower and longer than in P. charlestonensis; angle between scapular rods about 130◦; shaft of humerus very straight. |
Measurements
No measurements are available
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| Source: superf = superfamily, subo = suborder, c = class, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009, Bush and Bambach 2015, Uetz 2005 | |||||
Age range: base of the Late/Upper Oligocene to the top of the Chattian or 28.40000 to 23.03000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rupelian | USA (South Carolina) | A. palmeri (154345 154579) | |
| Late/Upper Oligocene | USA (Virginia) | A. palmeri (167201) | |
| Chattian | USA (South Carolina) | A. palmeri (60443) |