LAS VEGAS - SEPTEMBER 30: One of the world's largest set of shark jaws comprised of about 180 fossil teeth from the prehistoric species, Carcharocles megalodon, which grew to the size of a school bus, ...

(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 ...

Megalodon, the ancient shark often depicted as a super-sized great white, was in fact a rather different beast, according to a new analysis of fossil evidence. The fearsome predator was longer, more ...