Answer to Question #281292 in Zoology for Pouthuigangmei

Question

In which period of the zoological timescale the first vertebrate were appeared with egg?

Answer 1

The first reptiles evolved from an amphibian ancestor at least 300 million years ago. They laid amniotic eggs and had internal fertilization. They were the first vertebrates that no longer had to return to water to reproduce. They could live just about anywhere