Amateur fossil hunters found the only known Sonorasaurus specimen in the world in southern Arizona in ... Arizona has no official state dinosaur, so an 11-year-old proposed one — the Sonorasaurus.

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

An artist's reconstruction of a landscape dating to 209 million years ago at the site of Petrified Forest National Park in Arizona, based on fossils of plants and animals found preserved in a ...

Imagine an ear falling off a first century Roman statue and you’ll get an idea of what someone found at the Lake Mead National Recreational Area in Arizona.. Photos of the fossil — yes, it’s ...

Imagine an ear falling off a first century Roman statue and you’ll get an idea of what someone found at the Lake Mead National Recreational Area in Arizona.. Photos of the fossil — yes, it’s ...

Imagine an ear falling off a first century Roman statue and you’ll get an idea of what someone found at the Lake Mead National Recreational Area in Arizona.. Photos of the fossil — yes, it’s ...

“Numerous unique fossils” have been found in the park, but this one apparently has experts stumped. Park officials didn’t say how the fossil came to their attention. Evidence of human ...