Edmontosaurus skull profile Styracosaurus " These teeth are usually

" These teeth are usually found by scientists apart from a full T

bony crest was as big or bigger than the rest of its skull and may have been used to produce sounds

possibly for protection against predators

Ammonites are similar to today's nautilus

It occurs as far north as Alaska and all but the northernmost portions of Canada

Edmontosaurus skull profile Styracosaurus " These teeth are usuallyThis large Edmontosaurus skull is from the Creteceous of Albrerta, Canada. Edmontosaurus was a large bipedal plant eating dinosaur found in western North America. It belonged to a group of the "duckbilled or hadrosaur dinosaurs", characterized by a particular denture formed by batteries of hundreds of small lozenge teeth for pulverizing the tough plant food. They were up to 39 feet long and 16 feet tall. They lived during the late Cretaceous Shipping