Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Order Carcharhiniformes Compagno, 1973 - ground sharks Family Triakidae Gray, 1851 - houndsharks Genus Mustelus Linck, 1790 - smoothhounds Mustelus asterias Cloquet, 1821 - smooth-hound Mustelus mustelus (Linnaeus, 1758) - gray mouth dog Mustelus punctulatus Risso, 1826 - blackspotted smooth-hound