Echmatemys

Echmatemys; Temporal range:Eocene,55Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Shell ofEchmatemys stevensoniana(AMNH 6084) in theAmerican Museum of Natural History
Scientific classification
Domain:	Eukaryota
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;

Echmatemysis an extinctgenusofgeoemydidturtle from theEoceneofNorth 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.S2CID 86364121.

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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.S2CID 86364121.

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