Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs see Order Opisthobranchia Milne-Edwards, 1848
       Order Cephalaspidea Fischer, 1883
         Superfamily Acteonoidea d'Orbigny, 1843
           Family Philinidae Gray, 1850 (1815)
             Genus Philine Ascanius, 1772
               1 Subgenus Philine Ascanius, 1772
               2 Subgenus Megistostoma Gabb, 1864
               3 Subgenus Pseudophiline Habe, 1976