Evolution of the turtle shell based on developmental and fossil data. This animation is based on the work of Dr. Tyler Lyson, currently at the Denver Museum of Nature & Science. The animation shows how various fossils, particularly Eunotosaurus and Odontochelys, bridge the morphological gap between a generalized animal body plan to the highly modified body plan found in living turtles. The paper,
![Evolution of the Turtle Shell - YouTube](https://cdn-ak-scissors.b.st-hatena.com/image/square/4c508369e4879627cccf9620b4ab06dc32224b2e/height=288;version=1;width=512/https%3A%2F%2Fi.ytimg.com%2Fvi%2FqIOPDysP74g%2Fhqdefault.jpg)