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Chrysemys corniculata
Discussion
Etymology: From the Latin corniculum, deminutive of cornu, horn, for example, with small horns, referring to the anterior projections of the carapace, specifically on the nuchal, and sometimes referred to as the nuchal horns. The common name of this species is: horned painted turtle.
Taxonomy
Chrysemys corniculata was named by Jasinski (2022). Its type specimen is ETMNH-12491, a partial skeleton (complete carapace and nearly complete plastron, missing only small portions near the left and right bridges and the posterior-most rim of the plastron; set of i), and it is a 3D body fossil.
Sister species lacking formal opinion data
Entered
by E. Vlachos on 2022-12-06
Synonymy list
| Year | Name and author |
|---|---|
| 2022 | Chrysemys corniculata Jasinski |
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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.
†Chrysemys corniculata Jasinski 2022
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. E. Jasinski 2022 | Distinguished from all other Chrysemys by extreme anterior projections of nuchal under marginals 1; anterior-most point of nuchal in middle of anterolateral projections (or anterolateral nuchal horns); concavity of the posterior edge of the cervical scute on the visceral surface; posterior inflation of vertebral 1; shorter and posteriorly shifted bridge with the axillary buttress barely contacting the posterior of peripheral 3 and the inguinal buttress contacting the posterior of peripheral 7; relatively shorter femoral scute along the sagittal midline; thick overlap of plastral scutes (i.e. where the scute wraps onto the visceral surface of the plastron), particularly of the humeral and femoral scutes; anterior projection of the epiplastron beneath the gular resulting in a mid-length indent along the anterior plastral lobe rim; strongly scooped, or ventrally dipping medial portion of the epiplastra; inflation of posterior plastral lobe under femoral scutes; indent at lateral plastral edge of femoral scute-anal scute sulcus contact; flattened posterior edge of xiphiplastra; shortened fossa orbitalis; anteroposteriorly shortened and curved cavum tympani; pronounced depression immediately dorsal to processus articularis; wider angled lower jaws (86° in C. corniculata vs. 74–78° in modern Chrysemys); more pronounced sulcus cartilaginis meckelii; and more pronounced median ridge of the lower triturating surfaces |
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988, Kiessling 2004, Uetz 2005 | |||||
Collections
No collection or age range data are available