Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801 Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Order Carcharhiniformes Compagno, 1973 - ground sharks Family Scyliorhinidae Gill, 1862 - catsharks Genus Apristurus Garman, 1913 Genus Galeus Rafinesque, 1810 Genus Scyliorhinus Blainville, 1816