Americhelydia

Americhelydia; Temporal range: ; Late Jurassic or Early Cretaceous to Holocene
	Common musk turtle (Sternotherus odoratus), a species of the family Kinosternidae
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Cryptodira
Clade:	Americhelydia; Crawford et al., 2014
Subclades
	Chelydroidea Chelydridae; Kinosternoidea Dermatemydidae; Kinosternidae; ; ; Panchelonioidea †Toxochelys; †Protostegidae?; †Ctenochelyidae; Chelonioidea; ;

Americhelydia is a clade of turtles that consists of sea turtles, snapping turtles, the Central American river turtle and mud turtles, supported by several lines of molecular work. Prior to these studies some morphological and developmental work have considered sea turtles to be basal members of Cryptodira and kinosternids related to the trionychians in the clade Trionychoidea. Americhelydia and Testudinoidea, both clades within Durocryptodira (hardshell turtles), split a part during the early Cretaceous.

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