†unranked clade Ceratopsia Marsh 1890

Reptilia - Neornithischia

Synonym: Ponderopoda Huene 1948

Full reference: O. C. Marsh. 1890. Additional characters of the Ceratopsidae, with notice of new Cretaceous dinosaurs. American Journal of Science 39:418-426

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

See also Arldt 1909, Bakker 1986, Bakker and Galton 1974, Benton 1979, Benton 1990, Bonaparte 1978, Brown and Henderson 2015, Buffetaut and Ingavat 1992, Butler et al. 2007, Butler et al. 2008, Carroll 1988, Cooper 1985, Dalman et al. 2018, Dodson 1990, Dodson 1997, Estes 1964, Gadow 1897, Hatcher et al. 1907, Hay 1902, Huene 1948, Huene 1954, Huene 1958, Krebs 1974, Kuhn 1946, Kuhn 1964, Kuhn 1966, Lambert et al. 2001, Lull 1912, Lull 1915, Lull 1924, Lull 1933, Marsh 1894, Marsh 1895, Marsh 1896, Maryanska and Osmólska 1985, Matthew 1915, McIntosh 1981, Ostrom 1965, Ostrom 1980, Parks 1935, Parsch 1963, Peng et al. 2001, Rivera-Sylva et al. 2017, Romer 1956, Romer 1966, Roxo 1937, Russell 1984, Ryan et al. 2017, Sereno 1986, Sereno 1997, Sereno 1998, Sereno 1999, Sereno 2000, Sues and Galton 1987, Swinton 1970, Tatarinov 1964, Thulborn 1971, Tornier 1913, Van Den Broeck 1900, Weishampel 2004, Xu et al. 2006 and Zittel 1890

Sister taxon: Pachycephalosauria

Subtaxa: Albalophosaurus Chaoyangosauridae Chaoyangsauridae Dysganus Eoceratopsinae Kulceratops Kulceratops kulensis Micropachycephalosaurus Neoceratopsia Pachyrhinosauridae Psittacosauridae Psittacosauroidea Psittacosaurus sattayaraki Serendipaceratops Stenopelix

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