Then along come these provocative Pleistocene Rewildatators, who ask why we’re so stuck on 1492. In fact, it was about 13,000 years ago that humans showed up in North America, where they wasted ...

Most of the megafauna went extinct toward the end of the Pleistocene epoch. In North America, about 38 groups of mammals disappeared, and most of those were over about 99 pounds (45 kilograms ...

Dozens of megafauna (large animals over 100 pounds) -- such as giant tortoises, horses, elephants and cheetah -- went extinct in North America 13,000 years ago during the end of the Pleistocene.

The horse originated in North America around four million years ago ... climate change affected megaherbivore species in the Late Pleistocene. Horses have played an integral role in shaping ...

During the late Pleistocene, the study reports, horses repeatedly migrated between North America and Eurasia, but after the Last Glacial Maximum, warming caused a land bridge to be submerged ...