Oldest sea turtle fossil unveiled in Mexico

The fossils of seven sea turtles were found at different sites in Coahuila, the state that Mexican scientists call "the paradise of paleontology."
The sea turtle inhabited the northern region in the late Cretaceous period, 72 million years ago, and is the ancestor of the present day green turtle, the institute said.
It was one meter (yard) long, 70 centimeters (28 inches) wide and distinguished from other turtles by its rounded head.