A newly discovered early turtle fossil from 228 million years ago is missing something crucial: its shell. But in the long, intriguing tale of turtle evolution, turtles didn't always have it all -- ...

Ever consider the question of whether a turtle can truly pull its head into its shell like a cartoon representation in a ...

A 260 million-year-old fossil has been determined to be the oldest ancestor of turtles found to date, revealing something about the reptile's mysterious past. Michelle Starr is CNET's science editor, ...

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 ...

The biggest turtle ever described wasn’t an ancestor of today’s leatherback turtles or any other living sea turtles. But it looks like there are some things about being a giant, skin-shelled sea ...

This one-ton turtle once ruled South America’s rivers — until a changing planet proved too much for even the largest ...