Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
Order Carcharhiniformes Compagno, 1973 - ground sharks
Family Sphyrnidae Gill, 1872 - hammerhead sharks
Genus Sphyrna Rafinesque, 1810
Sphyrna lewini (Griffith & Smith, 1834) - scalloped hammerhead
Sphyrna mokarran (Rüppell, 1837) - great hammerhead
Sphyrna tudes (Valenciennes, 1822) - great hammerhead
Sphyrna zygaena (C. Linnaeus, 1758) - common hammerhead