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Trachemys antiqua
Taxonomy
Trachemys antiqua was named by Clark (1937). Its type specimen is YPM (PU) 13839, a partial shell (plastron, right posterior border of carapace, and right bridge), and it is a 3D body fossil.
It was recombined as Chrysemys antiqua by Hutchison (1996).
It was recombined as Chrysemys antiqua by Hutchison (1996).
Sister species lacking formal opinion data
Synonymy list
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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.
†Trachemys antiqua Clark 1937
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. Vlachos 2018 | “Trachemys” antiqua can be diagnosed as a member of Emydidae based on the characters mentioned above. “Trachemys” antiqua can be distinguished from other emydids based on the lateral covering of the nuchal by pleural I, no contact between vertebral I and marginal II, an elongated cervical scute, a wide and trapezoidal suprapygal I, small entoplastron, placement of humero-pectoral sulcus well posterior to the entoplastron, absence of plastral hinge, and contact between the inguinal and femoral scutes in ventral view. |
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Kiessling 2004, Carroll 1988, Uetz 2005 | |||||
Age range: Chadronian or 37.00000 to 33.90000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chadronian | USA (South Dakota) | Trachemys antiqua (16938) |