Infraorder Rhytidoidei (slug)
Parent taxon: Helicina according to P. Bouchet et al. 2017
Sister taxa: Clausilioidei, Helicoidei, Limacoidei, Oleacinoidei, Orthalicoidei, Plectopyloidea, Punctoidea, Pupilloidei, Succineoidei, Testacelloidea, Urocoptoidea
Subtaxa: Rhytidoidea
Ecology: epifaunal