Fossils of the pterosaur were discovered in Petrified Forest National Park. The fossils date back 209 million years.

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

Imagine holding a living creature so tiny it could perch comfortably on the tip of your finger, barely larger than a grain of ...

A Smithsonian-led team of researchers have discovered North America's oldest known pterosaur, the winged reptiles that lived ...

A new fossil study reveals that teeth began as skin sensors, helping explain why modern teeth still react painfully to cold ...

Scientists have unearthed in Arizona fossils from an assemblage of animals, including North America's oldest-known flying reptile, that reveal a time of transition when venerable lineages that were ...

Researchers at the University of New Mexico have identified the presence of bacteria in the healthy brains of fish.

Mysteries surround the elusive Greenland shark, the longest-living vertebrate in the world. Researchers have new insight into the unique fish’s genetic makeup.

Vertebrate limb development is a classic developmental model. In this Review the authors discuss how existing models of this process might be integrated and might form a framework for a systems ...

Complex neural circuits likely arose independently in birds and mammals, suggesting that vertebrates evolved intelligence multiple times.