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Noun: Ornithischia
  1. Extinct terrestrial reptiles having bird-like pelvises: armoured dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
    - order Ornithischia

Type of: animal order

Part of: Archosauria, subclass Archosauria

Encyclopedia: Ornithischia