thecodont

noun

1. any of various reptiles of the extinct order Thecodontia, occurring in the late Permian to late Triassic periods and characterized by teeth set in sockets.

adjective

2. having the teeth set in sockets.
3. belonging to or pertaining to the Thecodontia.

adjective

1. (of mammals and certain reptiles) having teeth that grow in sockets
2. of or relating to teeth of this type

noun

3. any extinct reptile of the order Thecodontia, of Triassic times, having teeth set in sockets: they gave rise to the dinosaurs, crocodiles, pterodactyls, and birds

1. Any of various extinct primitive archosaurs of the order Thecodontia of the late Permian and Triassic Periods. Thecodonts had teeth in sockets and were probably ancestral to the dinosaurs, pterosaurs, and crocodilians.