#genus_Corythosaurus  genus of duck-billed dinosaurs of late Cretaceous
  supertype:  reptile_genus__reptilegenu  a genus of reptiles
  member of:  family_Hadrosauridae
  member:  corythosaur__corythosaurus__corythosauru  duck-billed dinosaur with nasal passages that expand into a crest like a hollow helmet

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