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Zangerlchelys arkansaw
Taxonomy
Catapleura arkansaw was named by Schmidt (1944). Its type specimen is FMNH P27045, a partial skeleton (nearly complete carapace and plastron), and it is a 3D body fossil. Its type locality is Gather Brothers Farm, which is in a Campanian marine horizon in the Marlbrook Marl Formation of Arkansas.
It was recombined as Zangerlchelys arkansaw by Hirayama (2006).
It was recombined as Zangerlchelys arkansaw by Hirayama (2006).
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.
†Zangerlchelys arkansaw Schmidt 1944
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. P. Schmidt 1944 | A species of Catapleura with the generic characters evident, i.e. dorsal disk entirely free from the peripherals, except for contact of the latter with the first costal; first peripheral nearly triangular. The fontanelles between the disk and peripherals narrow and the projecting rib-ends correspondingly short; carapace broadly notched anteriorly; nuchal broad; first peripheral resembling that of Catapleura repanda, with a broad external and narrow internal border; nine neurals, the last three much shortened; first suprapygal without free edge; second with broad free edges at the sides. Plastron with a rounded central fontanelle; hyoplastra, hypoplastra, and xiphiplastra not in contact on the mid-line; entoplastron free at the sides; xiphiplastra suturally connected with the hypoplastra; hypolastron and hypoplastron on each side meeting in a long suture. Horny scutes essentially in agreement with those of Osteopygis. | |
| R. Hirayama 2006 | Medium-sized cheloniid with nuchal distinctly
emarginated anteriorly; fi rst to fourth vertebrals nearly rectangular shaped; second to fourth vertebrals longer than broad; suprapygal subdivided into three parts; plastral index 70. |