The ribs then grew outward into this disk, expanding in a fan-shaped pattern and trapping ... traditional view that the shell forms from small bony plates within the turtle’s skin that spread ...

The exoskeletons of snails and clams, or their shells in common parlance, differ from the endoskeletons of turtles in several ... calcium carbonate with only a small quantity of protein--no ...

Instead, the small round shapes bearing a leaflike pattern were once the shells of baby turtles that lived during the time of dinosaurs. Scientists have nicknamed the turtle species “Turtwig ...

Scientists mark turtles by filing a series of tiny V-shaped notches along the edges of their shells. Each turtle is notched in a unique pattern, allowing researchers to identify individual turtles and ...

How the turtle shell evolved has puzzled scientists for ... each of them explainable through small changes that gradually add up to the novel structure." ...

A turtle the size of a small car once roamed what is now South ... The researchers also discovered a turtle shell nearby that they believe belonged to the same species; the shell would've been ...