Researchers were able to date the fossil of the flying reptile, a close cousin of dinosaurs, back to more than 209 million years ago.

A team led by the Smithsonian has discovered North America’s oldest known pterosaur—a small, seagull-sized flying reptile that lived more than 200 million years ago in what is now Arizona.

A rare Triassic fossil site reveals North America's oldest known pterosaur, Eotephradactylus mcintireae, in what was once a rich ecosystem.