Every so often, a discovery comes along that changes our understanding of the distant past. In the vast landscapes of the ...

Prehistoric animals once roamed — and ruled — planet Earth. Some of them, like the giant sloth or the woolly rhino, were generally gentle. Others, like the saber-toothed tiger and the dire ...

It's also a clue that when giant sloths did eventually go extinct - some 12,000 years after this particular sloth lived - it was probably because of something more than just changing climates.

On the second voyage of HMS Beagle, Charles Darwin collected thousands of plant, animal, rock and fossil specimens, including 13 species of fossil mammals. Four of these were species of ground sloth, ...

Read on for our ranking of the scariest extinct creatures we're relieved we never had to face... Biodiversity Heritage Library/Wikimedia Commons/CC BY 2.0 It is the sheer size of the megatherium that ...

Kobayashi and his colleagues christened the new therizinosaur, Duonychus tsogtbaatari. The genus name means “double claw”, ...

The findings also revealed that, contrary to what scientists previously thought, giant ground sloths went extinct during the end of the Late Pleistocene, some 12,000 years ago. At that time ...

Jens Christian Svenning at a fossilized skeleton of a giant ground sloth, Lestodon armatus, on display in the Natural History Museum, New York Credit must be given to the creator. Only ...

The extinct giant ground sloths were some of the only mammals that had digestive systems large enough to process the huge avocado seeds whole. They feasted on the fruit and then dispersed the ...

Ice animals that are now extinct are represented in the drawings, including the mastadon, giant sloths and ice age horses. According to Colombian media, the discovery was made last year but the ...