hadrosaurus

1. Photo Gallery: Jurassic Period Paleontologists in China's Henan Basin discovered this nest of fossilized eggs laid by the Jurassic duck-billed herbivore Hadrosaurus.
   侏罗纪时代图片集。古生物学家在中国河南省盆地发现了这窝蛋化石所奠定的侏罗系（嘴巴）象鸭的食草动物鸭嘴龙。

noun

1. any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet

   Synonym:    hadrosaurduck-billed dinosaur