(Kayenta shell, named after the Kayenta Formation).
Named By: E. S. Gaffney, J. H. Hutchison, F. A. Jenkins Jr. & L. J. Meeker - 1987.
Classification: Chordata, Reptilia, Testudines, Cryptodira.
Species: K. aprix (type).
Size: About 50 centimetres wide, 60 centimetres long.
Known locations: USA, Arizona - Kayenta Formation.
Time period: Sinemurian-Pliensbachian of the Jurassic.
Fossil representation: Partial skull and shells of at least two individuals.
Kayentachelys is a genus of turtle that lived in the south-west of the USA during the early Jurassic. Though only known from incomplete remains, Kayentachelys has been identified as one of the earliest cryptodiran turtles.
- Modern turtle origins: - The oldest known cryptodire. Science 237:289-291. - E. S. Gaffney, J. H. Hutchison, F. A. Jenkins Jr. & L. J. Meeker - 1987.