Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Neogastropoda Wenz, 1938 see Suborder Neogastropoda Wenz, 1938
         Suborder Stenoglossa Bouvier, 1887
           Superfamily Muricoidea Rafinesque, 1815
             Family Fasciolariidae Gray, 1853 - tulip snails
               Subfamily Fusininae Wrigley, 1927
                 Genus Fusinus Rafinesque, 1815
                   1 Subgenus Aptyxis Troschel, 1868
                   2 Subgenus Berylsma Iredale, 1924
                   3 Subgenus Fusinella Thiele, 1917
                   4 Subgenus Heilprinia Grabau, 1904
                   5 Subgenus Microcolus Cotton & Godfrey, 1932
                   6 Subgenus Propefusus Iredale, 1924
                   7 Subgenus Simplicifusus Kira, 1962