Turtles

Turtle shell mystery

Boffins studying the ancient ancestor of modern turtles have discovered how the turtle's shell came to evolve.This month experts say their finds have shed light on a 30-55 million year gap in the history of the reptilem based on studying an extinct ancestral turtle from South Africa called Eunotosaurus.Tyler Lyson of the Smithsonian and Yale said: "The turtle shell is a complex structure that ...