Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct.
       Vertebrata Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
         Myopterygii Janvier, 1978 - myopterygians
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
             Grade Chondrichthiomorphi see Grade Chondrichthyomorphi
               Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
                 Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes see Infraclass Elasmobranchii Bonaparte, 1838
                   Infraclass Euselachii Hay, 1902 - sharks and rays, and related fossils see Subclass Euselachii Hay, 1902
                     Division Neoselachii Compagno, 1977 see Infraclass Elasmobranchii Bonaparte, 1838
                       Subdivision Batoidea - rays
                         Order Torpediniformes de Buen, 1926 - electric rays
                           Family Narcinidae Gill, 1862 - electric rays
                             Subfamily Narkinae see Family Narkidae Fowler, 1934
                               1 Genus Crassinarke Takagi, 1951 [monotypic]
                               2 Genus Heteronarce Regan, 1921
                               3 Genus Narke Kaup, 1826
                               4 Genus Temera Gray, 1831 [monotypic]
                               5 Genus Typhlonarke Waite, 1909