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|Noun||1.||anatotitan - one of the largest and most famous duck-billed dinosaurs|
duck-billed dinosaur, hadrosaur, hadrosaurus - any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
genus Anatotitan - genus of large duck-billed dinosaurs; late Cretaceous
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