It is a type of dinosaur that lived during the Late Cretaceous period, belonging to the ornithischian order, hadrosauridae family. Famous for its unique head features, which include a hollow coronal bone extending backwards, which may be used for vocalization or visual display. Medium size, with a body length of about 9 meters and a weight of up to 2 tons. The body structure adapts to living in open forests and swamps, feeding on plants. Fossils are mainly found in North America, especially in Alberta, Canada and New Mexico, United States. This type of dinosaur holds significant importance in the field of paleontology as it provides important clues about dinosaur behavior and social communication.