Meteor showers in July 2025 include the Perseids, Alpha Capricornids and Delta Aquariids. Here's when each shower peaks and how to see it in Arizona.

Scientists have unearthed in Arizona fossils from an assemblage of animals, including North America's oldest-known flying ...

Scientists have discovered a new species of pterosaur – a flying reptile that soared above the dinosaurs more than 200 ...

Researchers have discovered a new species of pterosaur - a winged reptile that lived alongside dinosaurs 200 million years ...

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

Ben Kligman, a Peter Buck Postdoctoral Fellow and paleontologist at the Smithsonian’s National Museum of Natural History, ...

A single deposit has produced a wealth of fossils revealing the late Triassic ecosystem, where giant amphibians cohabited ...

Found deep in the backcountry of the Petrified Forest National Park and uncovered by a volunteer in Washington, the specimen helps fill gaps in the fossil record.

The team named the new pterosaur species Eotephradactylus mcintireae. The generic name means ‘ash-winged dawn goddess’ and references the site’s volcanic ash and the animals’ position near the base of ...