Adaptive features of Reptiles that helped them to be the first true terrestrial animals
Reptiles are a group a cold blooded, creeping animals, successfully adapted for land life. Though amphibious are considered as first land animals, reptiles are first successful animals independent of water. They do not fear of dehydration. Their success is mainly because, they lay eggs on land. They are the first member of the amniotes originated on the earth. Reptiles originated about 255 million years ago in the carboniferous period of paleozoic era. Reptiles evolved from Anthracosaurs of Labyrinthodonts amphibious. During the origin of reptiles from amphibious the following evolutionary changes has occurred that helped them to be the first true terrestrial animals on this earth. 1. Land life : Reptiles become com...