Infraorder Littorinimorpha Golikov and Starobogtov 1975
Parent taxon: Hypsogastropoda according to M. Harzhauser 2007
See also Beesley 1998 and Bouchet et al. 2005
Sister taxa: Abyssochrysoidea, Capuloidea, Hipponicoidea, Latrogastropoda, Littorinoidea, Lyocyclidae, Naticoidea, Rissooidea, Settsassiidae, Triphoroidea, Truncatelloidea, Vermetoidea, Weeksiidae
Subtaxa: Cingulopsoidea Discopoda Pterotracheoidea Velutinoidea