Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Mollusca Linnaeus, 1758 - molluscs
           Subphylum Conchifera Gegenbauer, 1878
             Order Diotocardia
               Superfamily Neritoidea Rafinesque, 1815
                 1 Family Neritopsidae Gray, 1847
                 2 Family Neritidae Rafinesque, 1815 - nerites
                 3 Family Phenacolepatidae see Family Phenacolepadidae Pilsbry, 1895
                 4 Family Hydrocenidae Troschel, 1857
                 5 Family Helicinidae Férussac, 1822 - helicinids
                 6 Family Titiscaniidae Bergh, 1890