answersLogoWhite

0

The reptile clade includes the tuatara, lizards, snakes, turtles, crocodilians, and birds. Birds are considered reptiles now to make the phylogenetic tree monophyletic. Opposite to popular belief, the reptile clade is not entirely ectothermic; ( the absorption of external heat as the main source of body heat) birds are endothermic, capable of keeping the body warm through metabolism.

User Avatar

Wiki User

14y ago

What else can I help you with?