Rocks gathered along the Colorado River contained evidence of a bustling community of animals in an ancient sea.

The discovery, in a bizarre animal not closely related to birds, could change how scientists think about the origin of ...

During the Triassic period nearly 250 million years ago, a small reptile scurried after insects in the canopy of a lush ...

The ice cores could offer clues about a period known as the Mid-Pleistocene Transition that has long puzzled scientists ...

In a twist worthy of a detective novel, a long-misidentified fossil at Harvard's Museum of Comparative Zoology (MCZ) has ...