Faster than any shark alive today and big enough to eat an orca in just five bites: A new study suggests the extinct shark known as a megalodon was an even more impressive superpredator than ...

Fifteen million years ago, now-extinct species of dolphins, whales and large sea cows roamed the world’s oceans, topping the underwater food chain. Yet back then, any one of these creatures could ...

Revised tentative body outline of 24.3 meters (80 feet) extinct megatooth shark, Otodus megalodon. Important notes: 1) the exact shape, size, and position of most fins remain unknown based on the ...