Thaís Pansani examines the marks humans left on megafauna bones to determine when people arrived in South America and how ...

The fossilized leg bone of the terror bird went unidentified for almost 20 years. Nearly 12 million years ago, the largest ...

Sloths live in perpetual slow motion in the tropical rainforests of Central and South America today. But Roughly 10,000 years ago, a family of ancient, giant relatives would roam any number of ...

From fearsome land mammals to deadly sea creatures, we rank the most terrifying animals that once roamed Earth.

The post Man In Brazil Documented Hilariously Adorable Encounter With A Wild Sloth first appeared on Bored Panda.

Researchers including a Johns Hopkins University evolutionary biologist report they have analyzed a fossil of an extinct ...

The fossil was on display in a museum, but unlabeled and hidden right under paleontologists’ noses for 20 years.

Nearly 12,600 years ago, during the Late Pleistocene era, a group of humans hunted and killed a giant ground sloth in Argentina, then left the animal's bones behind, along with their butchering knife.

Four of these were species of ground sloth, three of which unknown to science.. Sloths are notable for their low energy levels and slow, deliberate movements (hence their name). They are part of a ...

But there are times when even sloths must leave the comfort of their tree canopies and descend to the ground. Sloths, like all living things, need to defecate, which usually happens once per week.

While past terror bird fossils placed the meat-eating birds at 3 to 9 feet tall, new findings suggest that some were even ...