Mysterious animals roamed on bird legs millions of years before the first birds appeared, study finds
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific breakthroughs and more. A new analysis of the tracks has revealed that three-toed fossil footprints dating back more than 210 million years had their feet pressed into soft mud by bird-like bipedal reptiles. Footprints found in various parts… Read More »