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

Researchers discovered that a 215-million-year-old reptile started life on four legs and switched to two as an adult.

If you thought that crocodiles were menacing enough, be glad that you didn’t live in Arizona some 225–201 million years ...

A "peculiar" ancient relative of the crocodile which experts believe began life on four legs before, in adulthood, it learned how to walk on just two has been revealed in a new study. Named ...

Scientists have discovered a water-bottle sized dinosaur fossil in Patagonia, Argentina. The tiny predator lived 95 million years ago and ranks among the smallest dinosaurs ever identified.

Researchers believe these creatures started out on four legs and later began walking on two legs as they grew.

Sonselasuchus cedrus, discovered in fossils from Arizona, was a crocodile relative from the Triassic period that grew into an ...

A triceratops skeleton that once greeted visitors at a Wyoming museum is heading to an online auction as dinosaur prices keep ...

A near-complete fossil from Patagonia has finally cracked open the mysterious evolutionary history of one of prehistory's strangest dinosaur groups ...

Learn how fossils from Arizona’s Petrified Forest National Park revealed that a Late Triassic crocodile relative may have started life on four legs before walking on two as an adult.

A newly discovered 47-egg clutch from Brazil provides scientists with unprecedented insights into the reproductive strategies ...

A new miniseries, narrated by Morgan Freeman, combines recent fossil research with cinematic reconstruction.