A newly described Patagonian fossil reveals the evolutionary origins and global spread of the tiny alvarezsaur dinosaurs.

Roughly 425 million years ago, in the warm seas over what is now southern China, there lived a metre-long bony fish with jaws ...

A nearly complete 90-million-year-old dinosaur fossil from Patagonia, Alnashetri, reveals how alvarezsaurs evolved and shrank over time.

Learn how Permian-era fossils from Brazil led researchers to a tetrapod with a twisted jaw from a lineage once thought ...

Scientists discovered a bizarre 275-million-year-old aquatic animal with sideways teeth and a twisted jaw in Brazil, revealing a rare “living fossil” lineage from the Permian period.

Forgotten fossils from the Kimberley show how marine amphibians rebounded and spread across the globe after the end-Permian mass extinction.

The peculiar Cambrian object known as Brooksella, studied for more than a century, may never have been a fossil at all. New research suggests it could simply be a very unusual rock formed by natural ...

More than half a billion years ago, the Grand Canyon was not the arid landscape we know today but a shallow, tropical sea teeming with strange life. Now, scientists have uncovered a remarkable fossil ...

These “total monsters of fishes” are extinct today, though new clues about their lives come from CT scans and their closest living relatives: the big-eyed ratfish of the deep sea Strange fossils ...

A strange little snake fossil found on England’s south coast has finally revealed its secrets—more than 40 years after it was discovered. The newly named Paradoxophidion richardoweni lived around 37 ...