†subfamily Monocloniinae Nopcsa 1923 (ornithischian)
Reptilia - Dinosauria - Ceratopsidae
Full reference: B. F. Nopcsa. 1923. Die Familien der Reptilien [The families of reptiles]. Forschritte der Geologie und Palaeontologie. Verlag von Gebrüder Borntraeger, Berlin 2:1-210
Parent taxon: Ceratopsidae according to F. v. Huene 1948
Sister taxa: Centrosaurinae, Ceratopsinae, Ceratopsipes, Chasmosaurinae, Pachyrhinosaurinae, Turanoceratops, Proceratops
Subtaxa: none
Type: Monoclonius
Ecology: ground dwelling herbivore