†unranked clade Marginocephalia Sereno 1986 (ornithischian)
Full reference: P. C. Sereno. 1986. Phylogeny of the bird-hipped dinosaurs (order Ornithischia). National Geographic Research 2(2):234-256
Parent taxon: Cerapoda according to P.-E. Dieudonné et al. 2020
See also Arbour and Evans 2019, Benton 1990, Buchholz 2002, Butler et al. 2007, Butler and Sullivan 2009, Butler et al. 2008, Dodson 1997, Han et al. 2012, Herne et al. 2019, Lambert et al. 2001, Madzia et al. 2018, Olshevsky and Ford 1994, Rauhut 2003, Sereno 1986, Sereno 1997, Sereno 1998, Sereno 1999, Weishampel 2004 and Xu et al. 2006
Sister taxa: Chasmatopia, Ornithopoda
Subtaxa: Ceratopsia Pachycephalosauria
Ecology: ground dwelling herbivore