Vertebrata Cuvier, 1812 - vertebrates Gnathostomata Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Subclass Holocephali Bonaparte, 1832 Suborder †Squalorajoidei (Patterson, 1965) [monotypic] see Order Squalorajiformes Patterson, 1965 1 Family †Squalorajidae Woodward, 1886