Americhelydia
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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 stud
Sternotherus odoratus
Cryptodira
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The Cryptodira are a suborder of Testudines that includes most living tortoises and turtles. Cryptodira is commonly called the "Hidden-Neck Turtles" or the "Inside-Neck Turtles". Cryptodira differ fro
Americhelydia
…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…
Curieuse Island asv 2024 10 img 19
Skull of a cryptodiran turtle from the family Emydidae
Dorsal view of skull and cervical vertebrae of a cryptodiran turtle from the family Emydidae. Not all cervical vertebrae are featured due to the dissection cut.
Testudo hermanni showing typical cryptodiran neck retraction, in which the head is retracted straight backwards into its shell.