Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
       Subclass Holocephali Bonaparte, 1832
         Order Chimaeriformes Obruchev, 1953 - chimaeras
           Suborder Chimaeroidei Patterson, 1965
             Family Chimaeridae Rafinesque, 1815 - shortnose chimaeras