Bizarre cat-sized reptile challenges our understanding of how four-legged animals evolved - Daily Mail

Daily Mail

Bizarre cat-sized reptile challenges our understanding of how four-legged animals evolved Daily Mail Four-limbed animals with a backbone are called tetrapods. In nearly all tetrapods, the forearm is made up of two, elongated and parallel bones, that connect to a series of much shorter, wrist bones at the base of the hand. But in drepanosaurus, the two ... and more »