Why the turtle got its shell
Burrowing power, not protection may have triggered carapace evolution
![Eunotosaurus africanus illustration](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/07/071416_lh_ancient-turtle-new.jpg?fit=860%2C460&ssl=1)
BIG DIG An ancient reptile (Eunotosaurus africanus), a precursor to today’s turtles, had a body well-suited to burrowing, as illustrated here. (Another extinct reptile, Bradysaurus, is shown in the background.)
Andrey Atuchin