Ancient reptiles. A class of larger birds hip dinosaurs. Skull like a goose head, round and tall. Wide, flat mouth, much like duck beaks hence the name. Mandibular teeth on the small clouds to feed on grass for a living. Forelimb thin, strong hind. Can be amphibious. Late Cretaceous most prosperous.
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yā zuǐ lóng
: A variety of vegetarian Ornithischia dinosaur in any one of these dinosaurs have blade-like teeth
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No. 3
: Duck-billed dinosaur genus or Hadrosaurid
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No. 4
Ancient reptiles. Life in the Mesozoic, is a medium-sized dinosaurs, mouth wide and flat like duck, short forelimbs, hind action relying on thick. Living in the waterside.