Echmatemys

Echmatemys; Temporal range: Eocene, 55 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Shell of Echmatemys stevensoniana (AMNH 6084) in the American Museum of Natural History
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Cryptodira
Superfamily:	Testudinoidea
Family:	Geoemydidae
Genus:	†Echmatemys; Hay, 1906
Species
	†E. septaria (Cope, 1873); †E. stevensoniana ; †E. wyomingensis ;

Echmatemys is an extinct genus of geoemydid turtle from the Eocene of North America. It is the oldest North American geoemydids, and is one of the most common early Eocene turtles.[1][2]

References

Lourenço, J. O. M.; Claude, J.; Galtier, N.; Chiari, Y. (2012). "Dating cryptodiran nodes: Origin and diversification of the turtle superfamily Testudinoidea". Molecular Phylogenetics and Evolution. 62 (1): 496–507. doi:10.1016/j.ympev.2011.10.022. PMID 22100825.
Parmley, D.; Howard Hutchison, J.; Parham, J. F. (2006). "Diverse Turtle Fauna from the Late Eocene of Georgia Including the Oldest Records of Aquatic Testudinoids in Southeastern North America". Journal of Herpetology. 40 (3): 343. doi:10.1670/0022-1511(2006)40[343:DTFFTL]2.0.CO;2.

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[LCGC11-1] Lourenço, J. O. M.; Claude, J.; Galtier, N.; Chiari, Y. (2012). "Dating cryptodiran nodes: Origin and diversification of the turtle superfamily Testudinoidea". Molecular Phylogenetics and Evolution. 62 (1): 496–507. doi:10.1016/j.ympev.2011.10.022. PMID 22100825.

[PHP06-2] Parmley, D.; Howard Hutchison, J.; Parham, J. F. (2006). "Diverse Turtle Fauna from the Late Eocene of Georgia Including the Oldest Records of Aquatic Testudinoids in Southeastern North America". Journal of Herpetology. 40 (3): 343. doi:10.1670/0022-1511(2006)40[343:DTFFTL]2.0.CO;2.