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
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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.
Turtle
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Turtles are reptiles characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira and Cryptodira, which differ in the way the hea
Cryptodira
…The Cryptodira (Greek: hidden neck) 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…
Turtle diversity
Indian tent turtle
Sea turtles have streamlined shells and limbs adapted for fast and efficient swimming.
The red-eared slider has an exceptional seven types of color-detecting cells in its eyes.