page_title: Kamuysaurus
section_title: Description
hierarchical_section_title: Kamuysaurus / Description
caption_attribution_description: Life reconstruction of Kamuysaurus japonicus gen. et sp. nov. with a carcass of a mosasaur (Phosphorosaurus ponpetelegans), a sea turtle (Mesodermochelys undulates), and shells of ammonoids (Patagiosites compressus and Gaudryceras hobetsense) and bivalves (Nannonavis elongatus) on the beach (above). The individual of Kamuysaurus in the foreground is reconstructed based on the assumption of the presence of a supracranial crest, similar to a sub-adult form of Brachylophosaurus. The individual behind it is reconstructed without the crest.
context_page_description: Kamuysaurus is a genus of herbivorous edmontosaurin saurolophine hadrosaurid dinosaur from Late Cretaceous Maastrichtian marine deposits of the Yezo Group in the Hobetsu area near the town of Mukawa, Hokkaido in Japan.
context_section_description: Kamuysaurus was about eight metres long. From the width of its thighbone, its weight has been estimated at 4 or 5.3 tonnes, dependent on its having been bipedal or quadrupedal respectively.
  The describing authors indicated some distinguishing traits. Three of these were autapomorphies, unique derived characters. On the quadrate bone, the notch at the opening separating it from the quadratojugal bone, is located at a very low position, at three quarters of the shaft length measured from the top of the element. This is unique for the Hadrosauridae as a whole. The surangular bone of the lower jaw has only a short ascending branch, not reaching the coronoid process. The sixth tot thirteenth back vertebrae have neural spines that are inclined to the front.
caption: Life restoration
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