Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Order Carcharhiniformes Compagno, 1973 - ground sharks Family Scyliorhinidae Gill, 1862 - cat sharks Genus Apristurus Garman, 1913 Apristurus nasutus de Buen, 1959 - largenose catshark