Millions of years before the earliest birds appeared, mysterious animals walked around on bird-like feet, research shows
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. Three-toed fossil footprints dating back more than 210 million years were pressed into soft mud by bipedal reptiles with feet like a bird’s, a new analysis of the tracks has revealed. The footprints, found at … Read more