Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Chrysemys isoni
Taxonomy
Chrysemys isoni was named by Weems and George (2001). Its type specimen is CMM-V- 4664, an osteoderm (One largely complete nuchal element ), and it is a 3D body fossil. Its type locality is Banks of Pamunkey River at county boundary, which is in an Oligocene marine horizon in the Old Church Formation of Virginia.
It was considered a nomen dubium by Vlachos (2018).
It was considered a nomen dubium by Vlachos (2018).
Synonymy list
Year | Name and author |
---|---|
2001 | Chrysemys isoni Weems and George p. 577 figs. Figure 6.1–6.3 |
2023 | Chrysemys isoni Weems |
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.
†Chrysemys isoni Weems and George 2001
show all | hide all
Diagnosis
Reference | Diagnosis | |
---|---|---|
R. E. Weems 2023 | Anterior region of nuchal greatly thickened, with an anterior border strongly constricted and deeply crenulated; lateral borders with adjacent first peripherals distinctly concave; cervical scute large and elongate on both dorsal and ventral sides, ventral side much longer than dorsal side. Entoplastron diamond shaped with rounded anterior and posterior edges; epiplastra lack the prominent knob found in C. picta near the middle of their dorsal (internal) surfaces. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
Source: f = family, c = class, subp = subphylum | |||||
References: Uetz 2005, Carroll 1988, Hendy et al. 2009 |
Age range: base of the Late/Upper Oligocene to the top of the Tortonian or 28.40000 to 7.24600 Ma
Collections (3 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Late/Upper Oligocene | USA (Virginia) | Chrysemys isoni (type locality: 167203) | |
Langhian | USA (Maryland) | Chrysemys isoni (70819) | |
Tortonian | USA (Maryland) | Chrysemys isoni (219172) |