marginocephalia

• 一类恐龙分类群，包括肿头龙类（厚头恐龙）和角龙类（有角恐龙）。

A taxonomic group of dinosaurs that includes pachycephalosaurs (boneheaded dinosaurs) and ceratopsians (horned dinosaurs).

不可数 · 专有名词

1. Dinosaur cladeB2formalscientific

   A group of dinosaurs defined by a bony shelf at the back of the skull, encompassing bone-headed dinosaurs and horned dinosaurs.

   恐龙演化支

   • Marginocephalia includes well-known dinosaurs like Triceratops and Pachycephalosaurus.
   • This group is distinguished by a unique skull structure called the parietosquamosal shelf.
   • Fossils of marginocephalians have been discovered in North America and Asia.
   • The evolutionary development of horns and domed heads is a key feature of Marginocephalia.