Tuesday, 3 December 2013

Kayentachelys aprix

Kayentachelys aprix from the Early Jurassic of Arizona is the earliest recorded cryptodire turtle.

Kayentachelys aprix
Gaffney, Hutchinson, Jenkins & Meeker, 1987
Meaning of generic name
"Kayenta turtle"
Meaning of specific name
exposed to the sun
[not given]
Holotype (MNA V1558): skull and shell.

Referred materials: MCZ 8914, MCZ 8983, MCZ 8917, MNA V1558, MNA V2664, TMM 43647-1, TMM 43651-1, TMM 43670-2, UCMP 130408, TMM43670-1.
Age and Distribution
Horizon: Kayenta Formation, early Jurassic (Plienbaschian).

Locality: Gold Spring Quarry, Adeii Eechii Cliffs, Coconino County, Arizona, US.
Anapsida Chelonia Cryptodira Kayentachelyidae
Further Reading
Gaffney, E. S., Hutchison, J. H., Jenkins, F. A., Jr and Meeker, L. J. 1987. Modern turtle origins: the oldest known cryptodire. Science 237: 289–291.

Sterli, J. and Joyce, W. G. 2007. The cranial anatomy of the Early Jurassic turtle Kayentachelys aprix. Acta Palaeontologica Polonica 52: 675–694.
Image by Nobu Tamura (click to enlarge)
Kayentachelys aprix:

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