[Neoselachii] Compagno, 1977 - modern sharks and rays see Infraclass Elasmobranchii Bonaparte, 1838 Order Lamniformes Berg, 1958 - mackerel sharks Family Alopiidae Bonaparte, 1835 [monotypic] - thresher sharks Genus Alopias Rafinesque, 1810 Alopias pelagicus Nakamura, 1935 - pelagic thresher