These are all examples of members of the Reptilia phylum.
What are Reptiles?: Reptiles are tetrapod vertebrates which are creatures that have four limbs, or like snakes who descended for four-limbed animals. Unlike amphibians reptiles do not go through an aquatic larval stage, they are egg birthed on land and remain there for the rest of their adult life. Reptiles range in size from the small gecko, to the large crocodile.
Evolutionary Origins: Reptiles originated in the late carboniferous period.
Evolutionary Origins: Reptiles originated in the late carboniferous period.