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Researchers at Petrified Forest discover fossil of a reptile with claws and a beak

A team of researchers at Petrified Forest National Park discovered fossilized remains of a new species of prehistoric reptile. The 220-million-year old burrowing species, named Skybalonyx skapteris, is a drepanosaur, an ancient reptile that had a claw on its tail and a birdlike beak.... Read more»

Rare frog fossil sheds light on a gap in Arizona's geological record

A tiny fossil find in northern Arizona fills shows frogs hopped (or not hopped) straight through a mass extinction.... Read more»