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 Turbinellidae Swainson, 1835
               Subfamily Vasinae Adams & Adams, 1853 (1840)
                 Genus Vasum Röding, 1798
                   1 Subgenus Altivasum Hedley, 1914
                   2 Subgenus Globivasum Abbott, 1950
                   3 Subgenus Siphovasum Rehder & Abbott, 1951