| 释义 |
〔pachycephalosaur〕Any of various medium-sized herbivorous dinosaurs of the genusPachycephalosaurus of the late Cretaceous period of North America, having a beaked mouth, rows of bumps on the head, and a domed skull up to ten inches (25.4 cm) thick. 厚头龙:白垩纪晚期厚头龙 属几种中型食草恐龙,嘴部似鸟啄,头部有几排肿块,穹顶状头骨约10英寸(25.4公厘)厚 |