Superorder Gnathostomata von Zittel 1879 (sea urchin)
Full reference: K. A. von Zittel. 1879. Handbuch der Palaeontologie 1(1):1-765
Parent taxon: Echinoidea according to C. D. Wagner and J. W. Durham 1966
Sister taxa: Acrosalenioida, Archaeocidaridae, Bromidechinus, Cassiduloidea, Cidarites, Cidaroidea, Diplocidaroida, Disasteroida, Dysaster, Echinocrinus, Echinoida, Euechinoidea, Hemicidaroidea, Oligopygoida, Parechinus, Perischoechinoidea, Radiolus, Regularia, Temnopleuroida
Subtaxa: none
Ecology: epifaunal grazer-deposit feeder