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†unranked clade Pachycephalosauria Maryanska and Osmolska 1974 (ornithischian)

Reptilia - Neornithischia

PaleoDB taxon number: 147917

Full reference: T. Maryanska and H. Osmolska. 1974. Pachycephalosauria, a new suborder of ornithischian dinosaurs. Palaeontologia Polonica 30:45-102

Parent taxon: Marginocephalia according to F.-L. Han et al. 2012

Sister taxon: Ceratopsia

Subtaxa: Goyocephale, Goyocephalia, Homalocephale, Homalocephalidae, Pachycephalosauridae, Pachycephalosauroidea, Qiyunshanpus, Tianchungosauroidea, Wannanosaurus

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Ecology: ground dwelling herbivore