The prehistoric creature is thought to have lived around 280-270 million years ago and was likely a "top predator" in its day ...

Scientists have discovered the oldest known animal with saber teeth: a predator that lived 270 million years ago. This animal ...

If all the world's a stage and all the species merely players, then their exits and entrances can be found in the rock record ...

A newly discovered fossil dates back to between 270-280 million years ago, pushing back their existence by around 15 million ...

The origin of mammals is shrouded in mystery, but every fossil clue helps rewrite the story. A new discovery on a ...

Old Football-sized Egg, Might Have Belonged to Sea Monster from Dinosaur Era In 2011, Chilean researchers found an egg fossil ...

It leads us to ancient seas where life began its ... Comb jelly, invader to the Black Sea. Image via Depositphotos The search for Earth’s first animal is far from over. Fossils and genetic studies ...

This year, the animal kingdom was filled with triumph, loss and new discoveries. Here is a look at NPR's top animal stories ...