WPlanorbidae
WAfrogyrorbis natalensis
WAmerianna carinata
WAmphigyra
WAncyliniWAncylusWAncylus fluviatilis
WAnisus
WAnisus calculiformis
WAnisus leucostoma
WAnisus natalensis
WAnisus septemgyratus
WAnisus spirorbis
WAnisus vortexWAnisus vorticulus
WAustralian freshwater limpet
WBathyomphalusWBathyomphalus contortus
WBiomphalaria schrammi
WChoanomphalus
WChoanomphalus amauronius
WChoanomphalus aorusWChoanomphalus maacki
WDomed ancylid
WDrepanotrema
WFerrissiaWFerrissia californica
WFerrissia rivularis
WGundlachia lucasi
WGyraulus piscinarum
WHelisomaWHelisoma anceps
WHippeutisWHippeutis complanatus
WIntha umbilicalis
WKessneria
WLentorbisWLentorbis carringtoni
WNeoplanorbisWNeoplanorbis tantillus
WPlanorbariusWPlanorbarius corneus
WPlanorbella campanulata
WPlanorbis
WPlanorbis carinatus
WPlanorbis planorbis
WPromenetus exacuous
WRamshorn snail
WRhodacmea
WSegmentinaWSegmentina nitida
WSegmentorbisWSegmentorbis kanisaensis
WShoal sprite
WWicker ancylid