†family Pachycephalosauridae Sternberg 1945 (ornithischian)

Reptilia - Neornithischia - Pachycephalosauridae

Synonym: Tholocephalidae Sereno 1986

Full reference: C. M. Sternberg. 1945. Pachycephalosauridae proposed for dome-headed dinosaurs, Stegoceras lambei, n. sp., described. Journal of Paleontology 19(5):534-538

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

See also Bakker 1986, Benton 1979, Bonaparte 1978, Bonaparte 1980, Butler et al. 2008, Carroll 1988, Cooper 1985, Dong 1978, Dong 1992, Eberth et al. 2001, Estes 1964, Evans et al. 2013, Galton 1971, Galton 1974, Goodwin et al. 1998, Jasinski and Sullivan 2011, Kuhn 1964, Maryanska 1990, Maryanska et al. 2004, Maryanska and Osmolska 1974, McIntosh 1981, Norman 1984, Ostrom 1980, Parsch 1963, Peng et al. 2001, Romer 1956, Romer 1966, Rozhdestvensky 1977, Russell 1984, Sereno 1986, Sereno 1997, Sereno 1998, Sereno 1999, Sereno 2000, Sternberg 1945, Sues 1997, Sues and Galton 1987, Sues and Taquet 1979, Sullivan 2006, Swinton 1970, Tatarinov 1964, Thulborn 1974, Thulborn 1977, Wall and Galton 1979, Watabe et al. 2011, Williamson and Carr 2003 and Zhao 1983

Sister taxa: Goyocephale, Goyocephalia, Homalocephale, Homalocephalidae, Pachycephalosauroidea, Qiyunshanpus, Tianchungosauroidea, Wannanosaurus

Subtaxa: Acrotholus Amtocephale Colepiocephale Domocephalinae Gravitholus Hanssuesia Pachycephalosaurinae Pachycephalosaurini Prenocephale Stegoceras Texacephale Troodon bexelli Tylocephale

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Ecology: ground dwelling herbivore

Distribution:

• Cretaceous of Canada (62: Alberta, Saskatchewan collections), China (1), Mongolia (5), United States (72: Alaska, Colorado, Montana, New Mexico, North Dakota, South Dakota, Texas, Wyoming)

Total: 140 collections including 143 occurrences

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