order_ornithischia
1. [ noun ] (biology,zoology) extinct terrestrial reptiles having birdlike pelvises: armored dinosaurs (thyreophorans); bone-headed and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
Synonyms: Ornithischia
Related terms: animal_order Archosauria Euronithopoda genus_Staurikosaurus genus_Pisanosaurus Marginocephalia Thyreophora ornithischian
Similar spelling:   order_Saurischia
  order_Aristolochiales
  order_Orthoptera
  order_Xiphosura
  order_Thysanura
  order_Orchidales
  order_Opiliones
  order_Nudibranchia
  order_Carnivora
  order_Branchiura