CerapodaDinosauriaGenasauriaLate CretaceousMarginocephaliaNeornithischiaNorth AmericaOrnithischiaPachycephalosauriaPachycephalosauridaePachycephalosaurinaePachycephalosaurini

Stygimoloch spinifer

Dinosaur: Stygimoloch spinifer

Type: Pachycephalosauria

Length*: 4.2 m 13.8 ft
Weight*: 330 kg 728 lb
*The largest known specimen

ESR: 3 / 4 (estimated size reliability)


Material: Probably at least 12 individuals (problematic, all material may belong to Pachycephalosaurus wyomingensis).
References: Sullivan, Robert M. (2006). "A taxonomic review of the Pachycephalosauridae (Dinosauria:Ornithischia)". Evans, D.C., Schott, R.K., Larson, D.W., Brown, C.M. & Ryan, M.J. (2013) "The oldest North American pachycephalosaurid and the hidden diversity of small-bodied ornithischian dinosaurs" (supplement).


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