reptiles

now, one of a genus of reptiles closely allied to the lizards.

It includes reptiles, birds, and mammals.

the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)

either of two amphibious reptiles related to crocodiles but with shorter broader snouts v

n thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)