Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates
     Superclass Pisces Linnaeus, 1758 - fishes
       Chondrichthyes Huxley, 1880 - cartilaginous fishes
         Family Torpedinidae Henle, 1834 - electric rays
           1 Genus Torpedo Duméril, 1806
           2 Genus Hypnos Duméril, 1852