Papo StegosaurusPapo Stegosaurus Papo Model 55007 Product Dimensions: 21. 5 x 6. 3 x 11. 4 cm Age: 3 years and up Did you know that the bony plates on a Stegosaurus's back were not just for decoration, but may have actually helped it regulate its body temperature? Recent studies suggest that these plates may have functioned like solar panels, absorbing heat from the sun during the day and releasing it at night to help keep the dinosaur warm. How cool is that? and