Herpetology

Carapace

등딱지

Definition

The dorsal (upper) part of a turtle's or tortoise's shell, composed of fused bony plates and keratinous scutes.

Detailed Explanation

The turtle's shell is a uniquely derived structure — ribs are fused to dermal bones, making the spine immovably integrated with the shell. This is anatomically extraordinary: no other vertebrate has ribs dorsal to its shoulder girdle. Shell shape reflects ecology: flat streamlined shells in aquatic turtles, high domed shells in tortoises (perhaps deterring gulping by large predators). Shell scute patterns are used for individual identification in conservation monitoring.

More in Herpetology