Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960
         Suborder Heteropoda Lamarck, 1812
           Superfamily Carinarioidea H.M.D. de Blainville, 1818 see Superfamily Pterotracheoidea Rafinesque, 1814
             Family Firolidae Rang, 1829 see Family Pterotracheidae Rafinesque, 1814
               Genus Pterotrachea Forskål, 1775