Chordata Bateson, 1885 - chordates Class Elasmobranchii Bonaparte, 1838 see Infraclass Elasmobranchii Bonaparte, 1838 Subclass Selachii see Division Selachii Order Batoidei see Order Batoidea Suborder Narcaciontes [monotypic] see Order Torpediniformes de Buen, 1926 [Family Narcaciontidae Gill, 1862] see Family Torpedinidae Henle, 1834