†unranked clade Pachyrostra Fiorillo and Tykoski 2012 (ceratopsid)
Reptilia - Ornithischia - Ceratopsidae
Full reference: A. R. Fiorillo and R. S. Tykoski. 2012. A new Maastrichtian species of the centrosaurine ceratopsid Pachyrhinosaurus from the North Slope of Alaska. Acta Palaeontologica Polonica 57(3):561-573
Parent taxon: Pachyrhinosaurini according to A. R. Fiorillo and R. S. Tykoski 2012
Sister taxa: Achelousaurus, Einiosaurus, Pachyrhinosaurus
Subtaxa: none
Ecology: ground dwelling herbivore
Distribution: there are no occurrences of Pachyrostra in the database