Allosaurus fragilis, tooth with root & serrations Stegosaurus Its heavyweight was supported by

Its heavyweight was supported by the last seven tail vertebrae

ribbed shell

the species named in honor of her contribution to children's education and the joy of exploration

Prehistoric Pottery

Allosaurus fragilis, tooth with root & serrations Stegosaurus Its heavyweight was supported byAllosaurus (pronounced Al oh SAWR us) Allosaurus, meaning "different lizard," was a huge, meat eating dinosaur from the late Jurassic period, about 154 million to 144 million years ago. It was a theropod that lived in what is now the western United States. It was up to 40 feet long and weighed up to 4. 5 tons. The skull was nearly 3 feet long and filled with dozens of serrated razor sharp teeth. It was about 10 feet tall at the hip and had 3 clawed