Mammal vs Synapsid - What's the difference?
mammal | synapsid |
An animal of the class Mammalia, characterized by being warm-blooded, having hair and feeding milk to its young.
(paleontology) A vertebrate with three bones in the inner ear and one in the jaw.
Pertaining to the class Synapsida, of animals which have an opening low in the skull roof behind each eye, leaving a bony arch beneath each.
*1999 , (Matt Ridley), Genome , Harper Perennial 2000, p. 26:
*:We are synapsid tetrapods, a group of reptiles that almost went extinct 200 million years ago in competition with the better-designed dinosaurs.