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 ...

WASHINGTON (Reuters) - There definitely were no muppets during the Permian Period, but there was a Kermit - or at least a forerunner of modern amphibians that has been named after the celebrity frog.

LOS ANGELES - Researchers at the Smithsonian's National Museum of Natural History have stumbled upon the fossilized skull of a 270-million-year-old amphibian forebear. As per the discovery published ...

The rocks in the area in which the skull was found, known as the Red Beds, are over 270 million years old, and contain fossils of several ancient species that are early relatives of modern amphibians, ...

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 ...

A recently-discovered amphibian ancestor has been named after Kermit the Frog, the ballad-crooning, pig-wooing lime green frog who headlines the Muppets. According to a new study in the Zoological ...

Beneath their slimy skin, some frog species hide a set of secret weapons. In a new series of incredible high-resolution images, researchers reveal in unprecedented detail just how some amphibians' ...

GAINESVILLE, Fla. --- Many frogs look like a water balloon with legs, but don't be fooled. Beneath slick skin, some species sport spines, spikes and other skeletal secrets. While most frogs share a ...

Some frogs love the water; some prefer dry land. Some are colored to stick out, some to blend in. There are nearly 5,000 different species of frogs hopping, croaking, and swimming across the Earth of ...