A new study suggests two fossil trackways found in Australia were made by an early amniote, a group that today includes ...

Around 591 million years ago, Earth’s nearly vanished magnetic field triggered a surge in oxygen that paved the way for ...

It happened 4.5 billion years ago, when the solar system was full of orbiting space rocks. This debris clumped up in a ...

Fossilized tracks from an early reptile are now the oldest known reptilian tracks, meaning the tetrapod ancestor most likely ...