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
         Suborder Ptenoglossa Gray, 1853 see Infraorder Ptenoglossa Gray, 1853
           Superfamily Janthinoidea Lamarck, 1822 see Superfamily Epitonioidea Berry, 1910 (1812)
             Family Epitoniidae Berry, 1910 (1812) - wentletraps
               Subfamily Epitoniinae Berry, 1910 (1812) see Family Epitoniidae Berry, 1910 (1812)
                 01 Genus Epitonium Röding, 1798
                 02 Genus Acirsa Mörch, 1857
                 03 Genus Acrilloscala Sacco, 1891
                 04 Genus Alexania Strand, 1928
                 05 Genus Alora Adams & Adams, 1861
                 06 Genus Amaea Adams & Adams, 1853
                 07 Genus Cirsotrema Mörch, 1852
                 08 Genus Claviscala Boury, 1909
                 09 Genus Cycloscala Dall, 1889
                 10 Genus Cylindriscala Boury, 1909
                 11 Genus Depressiscala Boury, 1909
                 12 Genus Gregorioscala orth. inval. see Genus Gregorioiscala Cossmann, 1912
                 13 Genus Gyroscala Boury, 1887
                 14 Genus Nitidiscala Boury, 1909
                 15 Genus Opalia Adams & Adams, 1853
                 16 Genus Periapta Bouchet & Warén, 1986
                 17 Genus Punctiscala Boury, 1889
                 18 Genus Rugatiscala Boury, 1913
                 19 Genus Rutelliscala Kilburn, 1985
                 20 Genus Sagamiscala Masahito, Kuroda & Habe, 1971
                 21 Genus Sthenorhytis Brown, 1913, orth. inval. see Genus Sthenorytis Conrad, 1862
                 22 Genus Amiciscala de Boury, 1912
                 23 Genus Berthais Melvill, 1904
                 24 Genus Chuniscala Thiele, 1928
                 25 Genus Cirratiscala Boury, 1909
                 26 Genus Clathroscala Boury, 1889
                 27 Genus Couthouyella Bartsch, 1909
                 28 Genus Crebriscala Boury, 1909
                 29 Genus Dannevigena Iredale, 1936
                 30 Genus Discoscala Sacco, 1891
                 31 Genus Eglisia Gray, 1842
                 32 Genus Foraceiscala de Boury, 1911 see Genus Epitonium Röding, 1798
                 33 Genus Fragiliscala Azuma, 1962
                 34 Genus Fusicoscala Monterosato, 1890 see Genus Epitonium Röding, 1798
                 35 Genus Gradatiscala Boury, 1909
                 36 Genus Innesiscala de Boury, 1912
                 37 Genus Kurodacirsa Masahito & Habe, 1975
                 38 Genus Lampropalia Kuroda & Itô, 1961
                 39 Genus Laniscala Lan, 1976
                 40 Genus Mazescala Iredale, 1936
                 41 Genus Narvaliscala Iredale, 1936
                 42 Genus Pomiscala Iredale, 1936
                 43 Genus Propescala Cotton & Godfrey, 1931
                 44 Genus Reticuliscala de Boury, 1909 see Genus Epitonium Röding, 1798
                 45 Genus Spiniscala Boury, 1909
                 46 Genus Subuliscala Boury, 1909
                 47 Genus Tasmalira Dell, 1956
                 48 Genus Turbiniscala de Boury, 1909
                 49 Genus Turriscala de Boury, 1890
                 50 Genus Variciscala de Boury, 1909