Duck-billed platypus – Biology and Evolution

By |2017-05-26T16:14:18-07:00May 26th, 2017|Biology|0 Comments

Duck-billed platypus swimming Probably the very first mammals that evolved from reptiles about 200 million years ago were small animals covered with fur that still laid eggs like reptiles, but their babies got milk from their mothers like mammals. Most of the mammals like this have died out now, but one survivor is [...]