A Pennsylvania lawmaker says she will soon propose a bill that would change Pennsylvania’s state fossil. The Pennsylvania ...

Marinoan global glaciation lasting 4 million years confirmed; stable ice defies current climate models and biological ...

Squat rhinos lived in North America about 12 million years ago, congregating in huge, water-bound herds much like modern hippos.

A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.

Researchers created 3D models of ancient tracks in Oregon’s John Day Fossil Beds National Monument. The study revealed a ...

It's one hell of an old ant. Researchers discovered a 113-million-year-old hell ant preserved in a chunk of Brazilian ...

Scientists revisited tracks made by a shorebird, a lizard, a cat-like predator and some sort of large herbivore at what is ...

This fossil is 13 million years older than any ant fossil found before—and reveals a sophisticated predator that lived ...

Two hundred and fifty one million years ago, the worst mass extinction event Planet Earth has ever seen ruined the life of ...