Fossils reveal that there were at least two kinds of koala when humans first arrived in Australia, but one died out about ...

An extinct koala species has been discovered in Western Australia. Climate change 28,000 years ago erased its habitat.

A long-neglected fossil seems to show the evolutionary leap that let the ancestors of today’s many-legged arthropods crawl ...

That's the number of specimens—including plants, animals, minerals, and human artifacts—curators estimate are held in the ...

Some of the most beautiful creatures to grace the ancient seas, the ammonites, disappeared in the end-Cretaceous mass ...

Tyrannosaurs may be famous as fearsome apex predators, but new research reveals a more opportunistic—and slightly grim—side to their behavior. Using high-resolution 3D scans, a researcher identified ...

Pollen, algae, insects, radiolarians – each unique microfossil holds clues to how Earth has changed over millions of years.