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