When did dinosaurs evolve, and what did the first ones look like ... to how much of that evolutionary history is currently missing.' Dinosaurs belong to a group of animals known as archosaurs. Today ...

produced the most intense burst of evolution ever known. The Cambrian Explosion saw an incredible diversity of life emerge, including many major animal groups alive today. Among them were the ...

But the DNA findings say differently. All modern dogs are descendants of wolves, though this domestication may have happened twice, producing groups of dogs descended from two unique common ancestors.

This was a period when animal groups like mammals, dinosaurs, crocodilians, turtles, lizards were first evolving, explained Rawson. He said this makes the fossils "really important for ...

"This study not only addressed the early evolution of the group, but also explored small ... they evolved into well-adapted marine animals that occupied a wide variety of niches and habitats.

evolved in ecdysozoan animals, a group that includes insects, nematodes, and priapulid worms. Their findings, published in a paper titled "Preservation and early evolution of scalidophoran ventral ...

They were followed during the rest of the Jurassic by most modern shark groups. It was at this point that they evolved flexible, protruding jaws, allowing the animals to eat prey bigger than ...