any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic.
众多的大型两足
恐龙，长有鸭嘴状的角形嘴和蹼足；可能曾有部分水栖习性。
恐龙any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic.
众多的大型两足恐龙，长有鸭嘴状的角形嘴和蹼足；可能曾有部分水栖习性。
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