New research painted a more accurate picture of the megafauna that spread widely around the Americas before they went extinct.

Even among the strangest-looking dinosaurs, few are as odd as the newly discovered Duonychus tsogtbaatari. Unearthed in ...

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.

But a new discovery points to the fact that incredible extinct creatures that once dominated the earth, like mastodons, giant sloths, and ancient humans coexisted for a millennia, a finding that ...

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, ...

Published in iScience, this research sheds light on the poorly understood evolution of these herbivores resembling prehistoric sloths. The fossils, unearthed in 2012 in the Bayanshiree Formation, ...

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 ...

Paleontologists discovered Duonychus tsogtbaatari from fossils uncovered in 2012. It was a giant, feathered creature adapted ...

He was hard to miss if you were driving to Bellingham. A giant stuffed sloth lived in a tree off Interstate 5 (I-5) near Lake Samish. He is called “Slothy.” The Washington Department of ...