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

A 7-day mission begins along one of the wildest coastlines on Earth. With a heavily loaded boat, limited water, and only basic gear, the journey pushes north through Cape York toward the very tip of ...

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