genus psittacosaurus

Noun
  1. Most primitive genus of horned dinosaurs;
    Early Cretaceous (synset 101707488)
    is a type of: reptile genus - a genus of reptiles
    member holonym: psittacosaur, psittacosaurus - primitive dinosaur actually lacking horns and having only the beginning of a frill; long hind limbs and short forelimbs; may have been bipedal
    belongs to: ceratopsia, suborder ceratopsia - horned dinosaurs

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