The students found the bone last spring in an Ice Age sediment deposit, placing it in a ballpark between 11,500 years and 300,000 years old. It’s the first Jefferson’s ground sloth fossil ever ...

Modern sloths may be dedicated vegetarians, but at least one of their massive Ice Age cousins chowed down on meat when it had the chance. Darwin’s ground sloth — which could grow to over 3 ...

The paintings include depictions of what appear to be now-extinct animals, such as the mastodon, a prehistoric relative of the elephant, and giant sloths and Ice Age horses, researchers say.

these sloths were one of the strangest animals of the ice age. They weighed as much, or more, than the short-faced bear at 1 tonne and stood 3 metres tall, growing to the size of an ox.