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肿头类(Pachycephalosauria)

--肿头龙类Pachycephalosauria == {肿头龙 > 三角龙}
                             |     未定:
                             |    ?未命名的种 -- 印度
                             雅尔龙 Yaverlandia
                             |--皖南龙Wannanosaurus
                             `--饰头龙类Goyocephalia == {饰头龙+肿头龙}
                               |--饰头龙Goyocephale
                               |--微肿头龙Micropachycephalosaurus
                                `--平头龙超科Homalocephaloidea == {平头龙+肿头龙}
                                   |--平头龙Homalocephale
                                   |?-丽头龙Ornatotholus
                                   `--肿头龙科Pachycephalosauridae
                                      |--剑角龙Stegoceras
                                      `--肿头龙亚科Pachycephalosaurinae
                                         |--+ (Asian forms)
                                         |  |--膨头龙Tylocephale
                                         |  `--倾头龙Prenocephale
                                         `--肿头龙族Pachycephalosaurini (北美洲)
                                            |     未定:
                                            |     未命名 high-domed form -- 中-晚Campanian -- Alberta
                                            |?-重头龙Gravitholus
                                            |?-微头龙Microcephale
                                            |--肿头龙Pachycephalosaurus
                                            `--冥河龙Stygimoloch

 

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