New discoveries of small animals that lived more than 200 million years ago are changing how paleontologists think about biodiversity in the Triassic. Looking for fossils in Petrified Forest National ...

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 pterosaur.

WASHINGTON (Reuters) -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 ...

Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4.6 billion years. Mountains have been built and eroded, continents and oceans have moved ...

The relics of dinosaurs and prehistoric species abound in Arizona, telling the story of life on Earth from hundreds of millions of years ago. Based on records from the Paleobiology Database, a public ...

For over a century, the scientific literature has credited western missionaries with "discovering" fossils in Lesotho, the small, mountainous country surrounded by South Africa.