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

How the turtle shell evolved has puzzled scientists for years, but new research sheds light on how their hard shells were formed. Scientists say the ancient fossil skeleton of an extinct South African ...

With his age estimated at about 90, Cedar has weathered many of life's battles. But the craggy snapping turtle bears scars of what is surely his greatest test: large, wide gashes from a boat propellor ...