A study of fossil teeth from China shows early mammals got bigger before their diets became specialized after the ...

Scientists are increasingly worried we may be witnessing the start of the "sixth mass extinction"—the first to be caused by ...

Researchers analyzed 200 fossil teeth from ancient mammals in China, revealing how they adapted and diversified after the ...

Eutherian mammals living in China after the end-Cretaceous extinctions evolved larger tooth sizes first before becoming more specialized in their biting performance, mirroring a similar pattern in ...

Dire wolves were massive and highly intelligent animals nearly the size of a small horse, capable of ripping a man’s arm off as easily as a dog kills a rat. They lived in cold regions in a place ...

Just because a species is presumed extinct doesn’t mean it’s gone forever. Here are four glowing examples of this unique, and felicitous, phenomenon. Not all species that have been classified as ...

Millions of years of isolation have shaped Australia’s extraordinary mammal fauna into species unlike anywhere else in the world, from platypus to koalas and wombats. Tragically, Australia is the ...