Superfamily Limacoidea Family Limacidae Family Boettgerillidae Family Agriolimacidae Family Trigonochlamydidae Family Helicarionidae Subfamily Helicarioninae Subfamily Sesarinae Subfamily Ereptinae Subfamily Microcystinae Family Aillyidae Family Ariophantidae Subfamily Dyakiinae Subfamily Parmarioninae Subfamily Girasiinae Subfamily Macrochlamydinae Subfamily Chroninae Subfamily Durgellinae Family Trochomorphidae Family Urocyclidae Subfamily Urocyclinae Subfamily Trochozonitinae Family CystopeltidaeSuperfamily Littorinoidae Family Pomatiasidae Subfamily Pomatiasinae Subfamily Cyclotopsinae Family Chondropomatidae Subfamily Chondropomatinae Subfamily Adamsiellinae Subfamily Choanopomatinae Subfamily Cistulopsinae Subfamily Rhytidopomatinae
Superfamily Neritoidea Family Neritidae Subfamily Neritinae
Superfamily Lymnaeoidea Family Lymnaeidae Subfamily Lymnaeinae Subfamily Lancinea
Superfamily Oleacinoidea Family Oleacinidae Family Testacellidae
Superfamily Partuloidea Family Partulidae
Superfamily Physoidea Family Physidae
Superfamily Planorboidea Family Planorbidae Subfamily Planorbinae Subfamily Helisomatinae Subfamily Rhodacmeinae Subfamily Bulininae
Family Ancyclidae Subfamily Ancylinae Subfamily Ferrissiinae Superfamily Polygyroidea Family Polygyridae Subfamily Triodopsinae Family Thysanophoridae Family Ammonitellidae Superfamily Pupilloidea Family Vertiginidae Subfamily Truncatellininae Subfamily Gastrocoptinae Subfamily Aulacospirinae Subfamily Nesopupinae Family Pleurodiscidae Family Pupillidae Subfamily Pupillinae Subfamily Lauriinae Family Valloniidae Family Strobilopsidae Family Orculidae Family Chondrinidae
Superfamily Rissoidea Family Hydrobiidae Subfamily Horatiinae Subfamily Cochliopinae Subfamily Lithoglyphinae Subfamily Amnicolinae Subfamily Tateinae
Family Bithyniidae Family Assimineidae
Superfamily Sagdoidea Family Sagdidae
Superfamily Streptaxoidea Family Streptaxidae Subfamily Enneinae
Superfamily Strophocheiloidea Family Strophocheilidae Family Megalobulimidae Family Dorcasiidae
Superfamily Succineoidea Family Succineidae Subfamily Succineinae Subfamily Catinellinae
Superfamily Valvatoidea Family Valvatidae
Superfamily Zonitoidea Family Zonitidae Family Vitrinidae Family Dauderbardiidae Family Parmacellidae