There are several camps of paleontologists in the dinosaur-bird evolution debate. One group believes birds descended from certain dinosaurs about 60 million years ago. Another camp believes proto-birds evolved separately from dinosaurs about 200 million years ago. And there is another group that has emerged: scientists who believe that birds are actually dinosaurs. Right now, there are not enough fossils to come to a definite conclusion, and all sides have good arguments. However, with the advent of DNA sequencing, scientists may one day have the answer.