Roughly half a million years ago, a group of armadillo-like mammals, horses, and sloths met their end in a sinkhole in what ...

For nearly 30 million years, a 2,000-pound beast known as the entelodont ruled a sweeping empire from Mongolia to what is now ...

Its original owner is a giant ground sloth that lived during the early Holocene era, soon after the retreat of the 3,000-foot-thick Cordilleran ice sheet. Its Puget Lobe, extending from Canada to ...

Fossils found by workers digging a tunnel for a new railway line in Los Angeles have been identified as the remains of a giant sloth and a bison. The "amazing discovery" of a sloth's hip bone and ...

Molecular dating has shown that several extinct creatures, such as giant sloths and mammoths, survived in South America much later than previously thought, raising questions about the root causes ...