A fossil from a seagull-sized winged reptile that lived millions of years ago was found in Arizona, and the creature has now ...

Smithsonian scientists have uncovered North America’s oldest known pterosaur from a 209-million-year-old bonebed in Arizona’s ...

A fossil found in Arizona reveals a new pterosaur species, Eotephradactylus mcintireae, also known as ash-winged dawn goddess, Smithsonian officials announced.

Tucked away in a remote bonebed in Arizona's Petrified Forest National Park laid hundreds of fossils, including a fragile jawbone belonging to one of the oldest-known flying reptiles: the ...

The newly-found fossils are 209 million years old and include pterosaurs, primitive frogs and lizard-like reptiles ...

A fossil found in Arizona reveals a new pterosaur species, Eotephradactylus mcintireae, also known as ash-winged dawn goddess, Smithsonian officials announced.