Phylum Mollusca Linnaeus, 1758 - molluscs
   Subphylum Conchifera Gegenbauer, 1878
     Class Gastropoda Cuvier, 1795 - snails and slugs
       Subclass Orthogastropoda Ponder & Lindberg, 1995
         Superorder Caenogastropoda Cox, 1960
           Order Sorbeoconcha Ponder & Lindberg, 1997
             Suborder Hypsogastropoda Ponder & Lindberg, 1997
               Infraorder Littorinimorpha Pchelintsev, 1963
                 Superfamily Rissooidea Gray, 1847
                   01 Family Anabathridae Keen, 1971
                   02 Family Assimineidae Adams & Adams, 1856
                   03 Family Barleeidae orth. inval. see Family Barleeiidae Gray, 1857
                   04 Family Bythiniidae F.H. Troschel, 1857, nom. inval. see Family Bithyniidae Gray, 1857
                   05 Family Caecidae Gray, 1850 - caecids
                   06 Family Calopiidae Ponder, 1999
                   07 Family Elachisinidae Ponder, 1985
                   08 Family Emblandidae Ponder, 1985
                   09 Family Emmericiidae Brusina, 1870 see Subfamily Emmericiinae Brusina, 1870, nom. protect.
                   10 Family Epigridae Ponder, 1985
                   11 Family Falsicingulidae Slavoshevskaya, 1975
                   12 Family Hydrobiidae Stimpson, 1865
                   13 Family Hydrococcidae Thiele, 1928
                   14 Family Iravadiidae Thiele, 1928
                   15 Family Moitessieriidae Bourguignat, 1863
                   16 Family Pomatiopsidae Stimpson, 1865
                   17 Family Rissoidae Gray, 1847
                   18 Family Stenothyridae Tryon, 1866
                   19 Family Tornidae Sacco, 1896 (1884)
                   20 Family Truncatellidae Gray, 1840
                   21 Family Vitrinellidae Bush, 1897 see Subfamily Vitrinellinae Bush, 1897