Shell-cracking turtles defied mass extinction at the end of the Cretaceous period

The asteroid impact at the end of the Cretaceous period caused one of the largest mass extinctions in Earth's history. But some organisms defied the catastrophe. For turtles, the chance of survival was apparently linked to their diet: species with a preference for hard-shelled organisms survived the catastrophic event. SNSB paleontologist Serjoscha Evers published the results of his study in the journal Biology Letters.