Turtles with shell-cracking jaws were far more likely to survive extinction due to their ability to be sustained on a restricted diet.

The mass extinction at the boundary between the Cretaceous and Paleogene periods was catastrophic, wiping out much of life on ...

It's a long-held idea that turtles can tuck their heads into their shells when threatened. But is it true? And is this protective trick why turtles the world over have shells today? The answer is that ...