#ornithischian_dinosaur__ornithischiandinosaur__ornithischian  herbivorous dinosaur with a pelvis like that of a bird
  supertype:  dinosaur  any of numerous extinct terrestrial reptiles of the Mesozoic era
  subtype:  pisanosaur  staurikosaur  armored_dinosaur  bone-headed_dinosaur  ceratopsian  ornithopod_dinosaur  hadrosaur
  member of:  order_Ornithischia__Ornithischia  extinct terrestrial reptiles having birdlike pelvises: armored dinosaurs (thyreophorans); bone-headed and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
     member of:  subclass_Archosauria__Archosauria  a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts
        member of:  class_Reptilia__Reptilia  class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a body usually covered with scales or horny plates; once the dominant land animals
           member of:  subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
              member of:  phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
                 member of:  kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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