Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Order Lamniformes Berg, 1958 - mackerel sharks Family Alopiidae Bonaparte, 1835 - thresher sharks Genus Alopias Rafinesque, 1810 Alopias superciliosus (Lowe, 1841) - bigeye thresher Alopias vulpinus (Bonnaterre, 1788) - thresher