The poodle-sized reptile that lived over 200 million years ago was among creatures that had features similar to dinosaurs it ...

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

He also noted that features such as bipedalism, toothless beaks, hollow bones, and large eye sockets are typically associated ...

A remarkable fossil discovery in India is giving scientists new clues about how some dinosaurs reproduced. Researchers have ...

Paleontologists have often determined how old a dinosaur was by counting the growth rings in its bones. Just like with trees, ...

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 "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 ...

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

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

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

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