Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Order Lamniformes Berg, 1958 - mackerel sharks Family Lamnidae Bonaparte, 1835 - mackerel sharks Genus Lamna Cuvier, 1816 Lamna nasus (Bonnaterre, 1788) - blue dog