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

An artist's impression of Dorudon, an ancestor of modern whales Further along this evolutionary journey we find Dorudon, which lived 40 to 33 million years ago. This five-metre-long animal had proper ...

The reduced hind limbs of whales are often touted as another example of vestigial structures, left over from their landlubbing days around 50 million years ago. Now, the legs are reduced to tiny hip ...

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 ...

Now, paleontologists have unearthed a whole new species of ancient whale dating to 43 million years ago, and this predator wasn’t just able to swim – it also had four legs and could walk.