A hunter-gatherer who trekked through a desert oasis a hundred centuries ago left the continent’s most lasting impression: the oldest known human footprints in North America. There are only ...

A tumultuous time on the southern Plains is slowly returning to the surface in Oklahoma, where archaeologists have excavated a 250-year-old fortress built by a people known as the Taovaya, who ...

A young sauropod that met its death mired in an ancient mudflat may have been small for its kind — that is, the size of a modern humpback whale — but it was a member of an early, ...

An enormous new species of predatory dinosaur has been discovered in the fossil beds of southeastern Utah, paleontologists say, a “colossal” carnivore that was the apex predator of ...

The frozen remains of a horse more than half a million years old have reluctantly given up their genetic secrets, providing scientists with the oldest DNA ever sequenced. The horse was discovered ...

The remains of houses, bits of charcoal, and rarely seen types of pottery are tantalizing new clues in one of the more persistent mysteries of Southwestern history: What happened to the culture ...