Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
       Subclass Holocephali Bonaparte, 1832
         Suborder †Myriacanthoidei Patterson, 1965
           1 Family †Acanthorhinidae Patterson, 1965 see Family Myriacanthidae Woodward, 1889
           2 Family †Chimaeropsidae Jaekel, 1919
           3 Family †Myriacanthidae Woodward, 1889