The land would later become the Iberian Peninsula, and the valley the creature stood would be buried deep in the rocks of Portugal. About 125 million years later, paleontologist Pedro Marrecas would ...

The creatures, which ranged in size from that of a fox to more than 50 feet long, divided their time between the coast and ...

Researchers have found fossil evidence of varied creatures wooing and mating, as they continue to search for the telltale ...

Even today’s giants — towering giraffes and massive elephants — are tiny compared to the prehistoric titans that once dominated the planet. Long before humans showed up, Earth was home to creatures so ...

From the deep-sea coelacanth to the ancient nautilus, these creatures provide a fascinating glimpse into prehistoric life.

Paleontologist Thais Pansani stands in front the reconstructed skeleton of a giant ground sloth at the Smithsonian National Museum of Natural History in Washington, D.C., on July 11. The Associated ...

Based on fossil finds, archaeologists are now piecing together how ancient humans thrived in a land dominated by dangerous large animals. A study published in the journal Science Advances has unveiled ...

Fossilized footprints and tracks dating back 50 million years ago discovered at the John Day Fossil Beds National Monument could provide new insight into how prehistoric animals lived in Oregon. The ...

PORTLAND, Ore. — If you look at pictures of salmon from the prehistoric era, you'll often see them with protruding teeth that pointed downward. But now, research shows that wasn't true. "The previous ...