Today in the Dinosaur Club I'm gonna talk about a Dinosaur called Pachycephalosaurus . The Pachycephalosaurus had a very big skull, the skull was attached to the spine and neck with very strong muscles and tendons. This added strength must have been important to Pachycephalosaurus, but scientist are still unsure exactly how. The hips were wide, wich has led some scientist to believe that these Dinosaurs fought each other sideways.
