Imagine a sloth. You probably picture a medium-sized, tree-dwelling creature hanging from a branch. Today's sloths—commonly ...

New research led by UNSW Sydney paleontologists challenges the idea that Indigenous Australians hunted Australia's megafauna to extinction, suggesting instead they were fossil collectors.

Researchers often rely on fossil teeth for clues about what extinct animals ate. Giant ground sloths’ teeth have been tricky ...

An Ice Age giant was tumbling around North America during the Late Pleistocene. About the size of a bear, it was actually a ...