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 Melongenidae Gill, 1871 (1854) - whelks
               Subfamily Melongeninae Gill, 1871 (1854)
                 Genus Pugilina Schumacher, 1817
                   Subgenus Megalatractus Fischer, 1884