TESTUDINATA

Chelonia, order Chelonia, Testudinata, order Testudinata, Testudines, order Testudines

(noun) tortoises and turtles

Source: WordNet® 3.1

Tes*tu`di*na"ta, n. pl. Etym: [Nl. See Testudo.] (Zoöl.)

Definition: An order of reptiles which includes the turtles and tortoises. The body is covered by a shell consisting of an upper or dorsal shell, called the carapace, and a lower or ventral shell, called the plastron, each of which consists of several plates.

Source: Webster’s Unabridged Dictionary 1913 Edition