The resulting Nankoweap landslide would have dumped enormous limestone boulders into the river corridor, creating a temporary ...

Smithsonian researchers have linked discoveries within Arizona’s Petrified Forest National Park with a previously unknown ...

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

Fossil hunting is quite the fun hobby, and if you want to indulge that interest, there are some specific places that you ...

Fossil shaped like a human ear has National Park Service asking questions about its origin in Arizona recreation area.

Fossil shaped like a human ear has National Park Service asking questions about its origin in Arizona recreation area.

In the remote reaches of Arizona s Petrified Forest National Park, scientists have unearthed North America's oldest known pterosaur a small, gull-sized flier that once soared above Triassic ecosystems ...

Fossil shaped like a human ear has National Park Service asking questions about its origin in Arizona recreation area.

Fossil shaped like a human ear has National Park Service asking questions about its origin in Arizona recreation area.

Fossil shaped like a human ear has National Park Service asking questions about its origin in Arizona recreation area.

Fossil shaped like a human ear has National Park Service asking questions about its origin in Arizona recreation area.

Fossil shaped like a human ear has National Park Service asking questions about its origin in Arizona recreation area.