1) Anatotitan 2) Corythosaur 3) Corythosaurus 4) Duckbilleddinosaur 5) Edmontosaurus 6) Hadrosaurus 7) Trachodon 8) Trachodont 1) Duck-billed dinosaur 2) Extinct duck-billed beast 3) Hadrosaurus 4) May have been partly aquatic 5) Ornithischian 6) Ornithischian dinosaur 
(from the article `Life Sciences`) Other dinosaurs from China that were described included a number of specimens found in Mongolia: Pinacosaurus from the Late Cretaceous and a ... Specialization of the teeth and jaws reached a pinnacle in the hadrosaurs, or duck-billed ornithopods. In this group a very prominent, robust ... ...certai...
Any of various amphibious dinosaurs of the genus Anatosaurus and related genera, which had webbed feet and a ducklike bill. (Greek hadros: 'thick, heavy'.)
[n] - any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet
hadrosaurus noun any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic