The incredible dinosaur that dominates the Earth Hall of the Natural History Museum is the most intact Stegosaurus fossil skeleton ever found. Measuring nearly 20 feet long from head to tail, around 90% of the skeleton is preserved, making it both incredibly rare and valuable. This is the story of its dramatic discovery and how this particular "roof lizard" is revolutionizing our understanding of this spiky giant. Stegosaurus was an armored vegetarian dinosaur that walked the Earth about 156-144 million years ago. Experts have been examining the skeleton since its arrival at the Museum in...