[Kingdom] Animalia Linnaeus, 1758 - animals
   Grade Enterozoa
     Grade Cœlomata
       Phylum Vertebrata Lamarck, 1801 see Infraphylum Vertebrata Lamarck, 1801
         Branch Craniata Linnaeus, 1758
           Grade Gnathostoma
             Subgrade Heterodactyla branchiata
               Class Pisces Linnaeus, 1758 see Superclass Pisces Linnaeus, 1758
                 I Subclass Selachii see Division Selachii
                 II Subclass Holocephali Bonaparte, 1832
                 III Subclass Ganoidæ
                 IV Subclass Teleostei Müller, 1845 see Division Teleostei Müller, 1845