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, ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The broad-shelled river turtle (Chelodina expansa) falls into a group known as side-neck turtles.

Add Yahoo as a preferred source to see more of our stories on Google. Not many turtles get to become social media influencers, especially ones like Hope. Hope was born with her heart exposed outside ...

NEW ORLEANS -- It's a marvelously ugly beast, with spiked and ridged armor, a sharply hooked beak, a fishing lure in its mouth and a nasty bite. But the alligator snapping turtle's hard shell holds ...

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 ...