Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Pisces Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes Order Carcharhiniformes Compagno, 1973 - ground sharks Family Proscylliidae Fowler, 1941 - finback catsharks