The Metal Earth Stegosaurus Skeleton Metal Model is based off what was an armored dinosaur that lived about 150 million years ago. It had a heavily rounded back making the construction a welcome challenge. The Metal Earth Stegosaurus Skel Metal Model also had short forelimbs, head held low to the ground and a stiffened tail held high in the air. The double plates along its back were most likely used for defense and may also have regulated its temperature. Ages 14 and up.