Shark Ancestors

Long before great white sharks appeared, much larger ancestors roamed the ocean. This giant ancient shark -- the Giant Megatooth (Carcharodon megalodon) -- was probably big enough to eat a whale.

Photograph of the model of a Giant Megatooth Shark, taken from the front..
Fossils of teeth from Giant Megatooth SharkSize comparison between humans, modern Great White Sharks and the ancient Giant Megatooth.Fossil tooth whorl of ancient shark.Artistic rendering of an ancient shark, Helicoprion.