| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Graptemys kerneri
Taxonomy
Graptemys kerneri was named by Ehret and Bourque (2011). Its type specimen is UF 239000, a skull, and it is a 3D body fossil. Its type locality is Suwannee River (DI005), which is in a Rancholabrean terrestrial horizon in Florida.
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Graptemys kerneri Ehret and Bourque p. 578 fig. 2 |
| 2018 | Graptemys kerneri Vlachos |
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.
†Graptemys kerneri Ehret and Bourque 2011
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. J. Ehret and J. R. Bourque 2011 | (Female) skull and mandible shorter in length relative to overall width, in contrast with G. barbouri, in which the skull is longer (measured from the nasal canal at the maxilla/premaxillary suture to the occipital condyle); external surface of maxilla deep dorsoventrally; enlarged protuberance of the processus trochlearis oticum on the parietal bone that overhangs the foramen for the trigeminal nerve, in contrast with G. barbouri, which only has a slight processus trochlearis oticum on the parietal that continues onto the prootic bone; canal for the stapedial artery deep, trench-like, high on the parietal bone, unlike G. barbouri, which has a shallow and low canal on the parietal; anterior edge of the otic capsule (comprised of the prootic and quadrate) relatively straight transversely, in contrast to G. barbouri, where this edge is angled posteriorly (when viewed dorsally); reduced inferior process of the parietal associated with an expanded passage between the orbital and inferior temporal fossae, compared with G. barbouri, where the inferior process of the parietal bulges along the parietal/palatine sulcus greatly reducing passage between the orbital and inferior temporal fossae (Figs. 2–4); mandible wide, U-shaped, and relatively flat with highly expanded triturating surfaces, differing from G. barbouri in which the mandible is dorsoventrally deeper and more V-shaped; symphyseal sulcus for triturating pads shallow, in contrast to that of G. barbouri, which is deep (more trench-like) and longer anteroposteriorly; broad thickened bulge at symphysis that runs the entire length of the symphysis, unlike G. barbouri, which has a relatively narrow symphyseal bulge; coronoid processes relatively low and rounded, in contrast to G. barbouri where the coronoid processes are taller and directed posteriorly (Figs. 4, 5). | |
| E. Vlachos 2018 | Graptemys kerneri can be diagnosed as a member of Pan-Emydidae based on the full list of characters listed for that clade above and as a member of Graptemys based on the presence of broad and flat triturating surfaces with contributions from the palatine and pterygoid, an interorbital region that is broader than the nasal chamber, and contact of the parietal with the palatine and of the pterygoid with the exoccipital. Graptemys kerneri differs from other Graptemys by the development of shorter and wider skull and mandibles, rounded and deeply notched border of maxilla, enlarged processus trochlearis oticum, a deep and trench-like canal for the stapedial artery on the parietal bone, a reduced inferior process of the parietal associated with an expanded passage between the orbital and inferior temporal fossae, a wider, U-shaped mandible, a shallow symphyseal sulcus for triturating pads, a broad, thickened bulge at the symphysis that runs the entire length of the symphysis, and a low and round coronoid processes. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: f = family, c = class, subp = subphylum | |||||
| References: Uetz 2005, Hendy et al. 2009, Carroll 1988 | |||||
Age range: base of the Gelasian to the top of the Rancholabrean or 2.58800 to 0.01200 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gelasian | USA (Florida) | Graptemys barbouri (19758) | |
| Rancholabrean | USA (Florida) | Graptemys kerneri (type locality: 195098) | |
| Late/Upper Pleistocene (interglacial) | USA (Florida) | Graptemys kerneri (195099) | |
| Late/Upper Pleistocene | USA (Florida) | Graptemys kerneri (150575) |