Imagine 8-foot-long millipedes scooting across the ground in search of rotting plants. While that thought may make your skin crawl, the creatures you have conjured did exist. That is the arthropleura, ...

Identified from remains found inside fossilized Carboniferous tree stumps, they were small, agile, lizard-like animals. Africa collided with eastern North America in the late Pennsylvanian ...

The find contradicts previous theories on the gigantic size of these creatures. While high atmospheric oxygen levels during ...

A captivating new species of arachnid from the late Carboniferous period is introduced ... the false belief that most of the world’s animals have already been discovered. But that’s not ...