Before the Spanish introduced modern horses to the New World, horses roamed wild in North America, then they disappeared, but ...

The animals that plummeted 85 feet into Wyoming’s Natural Trap Cave provide a layered history of life dating back to the ...

During the Pleistocene Epoch, North America was home to a diverse array of megafauna—large animals that dominated the continent’s landscapes. These creatures, some of which are now extinct ...

Here's a look at 15 extinct animals from the last North American ice age, and what scientists know about their lives. Compared with today's coyotes, the Pleistocene coyote had a thicker ...

North America used to be crawling with giant ... Giant sloths Related stories For most extinct Pleistocene megafauna — animals weighing more than 100 pounds — there are still living analogs.

At a site known as Natural Trap Cave, a team of scientists are rappelling down to uncover the secrets of what the Earth was ...

Illustrations of prehistoric North and South American animals including a glyptodon, lestodon, horse, mastodon, saber-toothed cat and a toxodon AP “Anything older than about 15,000 years still ...

Ichthyosaurs — or "fish lizards" — migrated across the Pacific Ocean between North America and China ... For more information about prehistoric animals that lived in Northern California ...

Like modern animals today, it’s believed Albertosaurus could have hunted in packs Across the series, the extraordinary ...

During the late Pleistocene ... contributing to horses’ decline in North America. The findings could inform modern conservation approaches. Large animals, or megafauna, play critical roles ...