A fossil skull of a prehistoric amphibian, found in a 230-million-year-old burrow in Wyoming, turned out to be from an unknown species. David Lovelace In prehistoric times, western Wyoming was a land ...

Arjan Mann (right), a Smithsonian postdoctoral paleontologist and former Peter Buck Fellow, and Calvin So (left), a doctoral student at George Washington University, holding the fossil skull of ...

One crawled across the rain-drenched ground of what is now Texas more than 270 million years ago, possibly feasting on fast-moving insects. The other endeared himself to millions as the banjo-playing ...

The species seemed to have bug eyes and a smile, so a team of researchers named it Kermitops gratus in honor of the banjo-playing Muppet. By Michael Levenson One crawled across the rain-drenched ...

The skull possesses a mishmash of traits that were different from features seen in the skulls of older tetrapods, the ancient ancestors of amphibians and other living four-legged vertebrates. For ...

Scientists have uncovered the fossilized skull of a 270-million-year-old ancient amphibian ancestor in the collection of the Smithsonian's National Museum of Natural History. The team of researchers ...

Paleontologists with the Smithsonian National Museum of Natural History have discovered a previously unknown prehistoric species — a 270 million-year-old amphibian with wide eyes and a cartoonish grin ...

Scientists at the Smithsonian identified a fossilized skull from a 270 million-year-old amphibian, which they've named Kermitops gratus Scientists have found a previously undiscovered ancient ...

(CNN) — Paleontologists with the Smithsonian National Museum of Natural History have discovered a previously unknown prehistoric species — a 270 million-year-old amphibian with wide eyes and a ...

Scientists at the Smithsonian identified a fossilized skull from a 270 million-year-old amphibian, which they've named Kermitops gratus Charlotte Phillipp is a Weekend Writer-Reporter at PEOPLE. She ...