Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Superclass Pisces Linnaeus, 1758 - fishes Chondrichthyes Huxley, 1880 - cartilaginous fishes Family Sphyrnidae Gill, 1872 - hammerhead sharks Genus Sphyrna Rafinesque, 1810 1 Sphyrna lewini (Griffith & Smith, 1834) - scalloped hammerhead 2 Sphyrna mokkaran (Rüppell, 1835) see Sphyrna mokarran (Rüppell, 1837)