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

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.

Several similar large, fossilized bone fragments have been discovered in various regions across Western and Central Europe since the 19th century. The animal group to which they belonged is still the ...

For paleontologist Ben Kligman, the question was: Is this fragile jawbone a pterosaur or not? Other researchers also had questions about the fossil, unearthed along with thousands of others during a ...