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 Runcinoidea Adams & Adams, 1854
           Family Philinoglossidae Hertling, 1932
             1 Genus Philinoglossa Hertling, 1932
             2 Genus Sapha Marcus, 1959