The earliest known turtle was a lizard-like reptile called Eunotosaurus africanus. Like turtles, its trunk was wide and stiff with nine vertebral ribs that would later develop into the familiar shell.

ELON MUSK has positioned himself as an innovative thinker, with bold ideas on what everything from efficient government to life on Mars should look like. His aesthetic principles, however, are ...

They have a unique characteristic to keep them safe. When in danger, the eastern box turtle can close the hinged sections of its shell, effectively sealing its soft body in bone, forming a "box." ...