Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960
         Superfamily Rissooidea Gray, 1847
           Family Hydrobiidae Stimpson, 1865
             Subfamily Nymphophilinae Taylor, 1966
               01 Genus Nymphophilus Taylor, 1966
               02 Genus Albaniana Radoman, 1973, nom. illeg.
               03 Genus Alzoniella Giusti & Bodon, 1984
               04 Genus Anagastina Radoman, 1978
               05 Genus Antibaria Radoman, 1973
               06 Genus Apachecoccus Taylor, 1987
               07 Genus Birgella Baker, 1926
               08 Genus Bracenica Radoman, 1973
               09 Genus Cincinnatia Pilsbry, 1891
               10 Genus Dalmatinella Radoman, 1973
               11 Genus Dolapia Radoman, 1973
               12 Genus Falsibelgrandiella Radoman, 1973
               13 Genus Graecorientalia Radoman, 1973
               14 Genus Grossuana Radoman, 1973
               15 Genus Heideella Backhuys & Boeters, 1974
               16 Genus Istriana Velkovrh, 1971
               17 Genus Malapresia Vaught, 1989, orth. inval. see Genus Malaprespia Radoman, 1973
               18 Genus Mercuria Boeters, 1971
               19 Genus Narentiana Radoman, 1973
               20 Genus Naumia Radoman, 1973
               21 Genus Notogillia Pilsbry, 1953
               22 Genus Ohridohauffenia Hadzisce, 1956
               23 Genus Ohridosturanya Radoman, 1973
               24 Genus Orientalina Radoman, 1978, nom. illeg.
               25 Genus Polinskiola Radoman, 1973
               26 Genus Prespiana Radoman, 1973
               27 Genus Prespolitorea Radoman, 1973
               28 Genus Pseudavionia Vaught, 1989, orth. inval. see Genus Pseudavenionia Bodon & Giusti, 1982
               29 Genus Pseudorientalia Radoman, 1973
               30 Genus Pyrgulopsis Call & Pilsbry, 1886
               31 Genus Raphinema Vaught, 1989, orth. inval. see Genus Rhapinema Thompson, 1970
               32 Genus Rotondia Radoman, 1963
               33 Genus Spilochlamys Thompson, 1968
               34 Genus Stiobia Thompson & McCaleb, 1978
               35 Genus Terranigra Radoman, 1978
               36 Genus Trichonia Radoman, 1973, nom. nud. see Genus Trichonia Schütt, 1980
               37 Genus Vinodolia Radoman, 1973
               38 Genus Yaquicoccus Taylor, 1987
               39 Genus Zaumia Radoman, 1973
               40 Genus Zavalia Radoman, 1973