Shark biologists now say a lemon shark, like this one, is a better model of the extinct megalodon's body than the great white shark. The megalodon has long been imagined as an enormous great white ...

(CNN) — Paleobiologist Dr. Kenshu Shimada has been fascinated by fossil sharks, including the giant Otodus megalodon, since childhood — he found his first megalodon tooth at 13 years old. So when he ...