Pleistocene Reference Libraries

Camelops, an extinct genus of camel, was found in North America in places like Arizona and they first appeared there in the late Pliocene era. There are six known species in this genus. Camelops became extinct at the end of the Pleistocene era, around ten thousand years ago. The Camelops extinction was part of a larger die-off of other large animals including mastodons, horses, and camelids....

Miracinonyx, commonly known as the American Cheetah, is an extinct genus of large cats. It was native to North America during the Pleiotocene era(1.8 million to 11,000 years ago). The American cheetah held at least two species in its genus that are similar to modern cheetahs, including Miracinonyx inexpectatus and M. trumani. Similarities distinguished by bone fragments include a short face and...

During the Pleistocene (3 million - 11,000 years ago), a genus of bear called Arctodus roamed North America. Little is known regarding the early history of these short-faced bears.  Considered the most common of the early North American bear, they belong to the group known as running bears. About 800,000 years ago it is evident they became widespread in North America and were most numerous...