Bolg amondol was a raccoon-sized armored mostesaurian lizard that lived about 77 million years ago, similar to today’s Gila ...

Sloths weren’t always the slow, tree-hugging creatures we know today. For millions of years, they came in a wild variety of ...

The exhibit has life-size fossil replicas, interactive displays, and education panels for all dinosaur fans and age groups.

Thousands of years ago, ground sloths as massive as elephants roamed the Americas. Their history, marked by spectacular ...

The animal kingdom boasts creatures that prioritize relaxation. From the unhurried cuckoos and bamboo-munching pandas to the ever-slumbering koalas an ...

But as the planet cooled again, sloths began to bulk up. The largest ground sloths emerged during the Ice Ages. Big bodies ...

While it’s clear that tree-dwelling lifestyles necessitate small bodies, scientists weren’t sure why ground sloths specifically demonstrated such vast size diversity. To investigate this ...

The larger sloths didn’t do much tree climbing, at risk of falling to their deaths. Instead, they survived by being terrifying; the largest sloths had long, sharp claws that they used to carve their ...

Giant sloths used to roam all over North America ... and whether they were climbers or walkers. Since sloth size was a major question, they measured museum fossils to estimate the sloth weight.

A new fossil and DNA analysis traces how dozens of sloth species responded to climate shifts and humans. Just two small tree-dwelling sloths remain today.