Paleontologists in Argentina recently found the first unambiguous evidence that a group of theropod dinosaurs had hollow ...

All tetrapods descended from a common ancestor that just happened to have ... and hand of different vertebrates form a recognizable pattern, even though they have been adapted to different functions.

The most recent common ancestors of both you and your siblings ... examples of such statements include "tetrapods (land vertebrates) evolved from fish" or "humans evolved from monkeys." ...

Unlike humans and other vertebrates, cephalopods’ camera eyes lack a blind ... Humans and other primates, such as chimpanzees and gorillas, inherited opposable thumbs from a common ancestor. This ...

From scales to feathers to fur, vertebrates clothe themselves in ... placing the structures in reptiles’, birds’, and mammals’ common ancestors more than 300 million years ago.