†unranked clade Chasmatopia Buchholz 2002 (ornithischian)
Full reference: P. W. Buchholz. 2002. Phylogeny and biogeography of basal Ornithischia. The Mesozoic of Wyoming. Proceedings of the Tate Museum Geology Conference 2002 18-34
Parent taxon: Cerapoda according to P. W. Buchholz 2002
Sister taxa: Marginocephalia, Ornithopoda
Subtaxa: none
Ecology: ground dwelling herbivore
Distribution: there are no occurrences of Chasmatopia in the database