ammonites
Goyocephale Perle et al. 1982 (ornithischian)

Reptilia - Dinosauria

Full reference: A. Perle, T. Maryanska, and H. Osmólska. 1982. Goyocephale lattimorei gen. et sp. n., a new flat-headed pachycephalosaur (Ornithischia, Dinosauria) from the Upper Cretaceous of Mongolia. Acta Palaeontologica Polonica 27(1-4):115-127

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

Sister taxa: Goyocephalia, Homalocephale, Homalocephalidae, Pachycephalosauridae, Pachycephalosauroidea, Stenopelixidae, Tianchungosauroidea, Wannanosaurus

Subtaxa: Goyocephale lattimorei

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Ecology: ground dwelling herbivore