Found on the southern coast of Peru, this amphibious creature had a tail and hooves and was the oldest preserved fossil of ...

One of the first cetaceans, Pakicetus, was a goat-sized creature that lived along the banks of lakes and rivers in ...

But a new discovery from University of Pisa paleontologists may dethrone the blue whale in favor of a prehistoric cetacean ...

It's the tale of an ancient land mammal making its way back to the sea, becoming the forerunner of today's whales. In doing so, it lost its legs, and all of its vital systems became adapted to a ...

This fossil graveyard, millions of years old, is known as the “Valley of the Whales.” Now, paleontologists have unearthed a whole new species of ancient whale dating to 43 million years ago ...

"The anatomical differences between whales and terrestrial mammals are so great that innumerable in-between stages must have paddled and swam the ancient seas before a whale as we know it appeared ...

To see if barnacles had the same properties long ago, Taylor hunted down fossils that lived on early humpback whales, and bingo: They did. He hopes to shed light on prehistoric whales’ movements ...

The biggest stories of the day delivered to your inbox.

The study finds the prehistoric hunter had a much longer body -- closer in shape to a lemon shark or even a large whale. The megalodon has long been imagined as an enormous great white shark ...