Chordata Bateson, 1885 - chordates Class Elasmobranchii Bonaparte, 1838 see Subclass Elasmobranchii Bonaparte, 1838 Subclass Selachii see Subdivision Selachii Order Tectospondyli Suborder Squatinoidei Berg, 1940 [monotypic] see Order Squatiniformes Buen, 1926 Family Squatinidae Bonaparte, 1838 - angel sharks