Researchers found a small skull with big eyes and a cartoonish grin. It could help solve an evolutionary puzzle
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. Paleontologists at the Smithsonian National Museum of Natural History have discovered a previously unknown prehistoric species — a 270-million-year-old amphibian with big eyes and a cartoonish grin — and the name is a nod to … Read more