Approximately 200 million years ago, Antarctica was attached to South America, Africa, India, and Australia in a single "supercontinent" called Gondwana. Paleontologists have long wondered about the ...

Teeth like sabers might ordinarily conjure images of fearsome extinct predators, but now researchers have revealed the earliest giant-fanged plant-eater known, a beast the size of a large dog that ...

WASHINGTON (Reuters) - It was a dire moment for life on Earth. Runaway global warming triggered by calamitous volcanism in Siberia inflicted the worst mass extinction on record - dooming perhaps 90% ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. Giant worm fossils found in North Greenland have revealed a past dynasty of ancient predators that is totally new to ...

A BIZARRE ancient sea creature with a twisted jaw and sideways-facing teeth has been uncovered. The creature’s mouth was so strange that experts initially thought it must have had a deformation. It ...

Cave bears have fascinated humans for the past 32,000 years. Our Paleolithic ancestors competed with the now-extinct mammals for caves — prime real estate — and then covered their walls with images of ...