†superorder Heterobranchia Gray 1840 (snail)
Parent taxon: Orthogastropoda according to P. Jeffery 2003
Sister taxa: Cocculiniformia, Murchisoniina, Neritopsina, Vetigastropoda
Subtaxa: Architectonicoidea, Doridoidea, Kuskokwimiidae, Nerineoidea, Omalogyroidea, Pyramidelloidea, Rissoelloidea, Valvatoidea
Ecology: epifaunal carnivore