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

Follow their extraordinary journey from shore to sea. Although whales are expert swimmers and perfectly adapted to life underwater, these marine mammals once walked on four legs. Their land-dwelling ...

While this find would be stunning enough in and of itself, this particular whale had one astoundingly distinct characteristic: four legs likely used to walk on land. According to Gizmodo ...

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 ...

Skeletons of Basilosaurus, a whale ancestor, reveal the leviathan still retained tiny hind legs. John Klausmeyer / University of Michigan Museum of Natual History Whales evolved from mammals that ...