#family_Hadrosauridae__Hadrosauridae  duck-billed dinosaurs; upper Cretaceous
  supertype:  reptile_family__reptilefamily  a family of reptiles
  member of:  suborder_Euronithopoda
  member:  hadrosaur__hadrosaurus__hadrosauru__duck-billed_dinosaur  any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
  member:  genus_Anatotitan  genus of large duck-billed dinosaurs; late Cretaceous
     member:  anatotitan  one of the largest and most famous duck-billed dinosaurs
  member:  genus_Corythosaurus  genus of duck-billed dinosaurs of late Cretaceous
     member:  corythosaur__corythosaurus__corythosauru  duck-billed dinosaur with nasal passages that expand into a crest like a hollow helmet
  member:  genus_Edmontosaurus  duck-billed dinosaurs of Canada
     member:  edmontosaurus__edmontosauru  duck-billed dinosaur from Canada found as a fossilized mummy with skin

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