'Kermit the Frog' creature that lived 270 million years ago looked like a 'stout salamander' with 'cartoonish' grin
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'Kermit the Frog' creature that lived 270 million years ago looked like a 'stout salamander' with 'cartoonish' grin

Scientists found the ancient amphibian fossil in the collection at the Smithsonian’s National Museum of Natural History.