Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Order Squaliformes Compagno, 1973 - dogfish sharks Family Dalatiidae Gray, 1851 - kitefin sharks Genus Etmopterus Rafinesque, 1810 - lanternsharks Etmopterus princeps Collett, 1904 - great lanternshark Etmopterus pusillus (Lowe, 1839) - slender lanternshark Etmopterus spinax (Linnaeus, 1758) - velvet belly