Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
     Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
       Order Squaliformes Compagno, 1973 - dogfish sharks
         Family Centrophoridae Bleeker, 1859 - gulper sharks
           Genus Deania Jordan & Snyder, 1902 - longnose dogfish
             Deania calcea (Lowe, 1839) - birdbeak dogfish
             Deania hystricosa (Garman, 1906)
             Deania profundorum (Smith & Radcliffe, 1912) - arrowhead dogfish