[Kingdom] Animalia Linnaeus, 1758 - animals
   Grade Enterozoa
     Grade Cœlomata
       Phylum Vertebrata (Lamarck, 1801)
         Branch Craniata Linnaeus, 1758
           Grade Gnathostoma
             Subgrade Heterodactyla branchiata
               Class Pisces Linnaeus, 1758 see Superclass Pisces Linnaeus, 1758
                 Subclass Ganoidæ
                   01 Order Sturiones
                   02 Order Polypterini Bonaparte, 1837
                   03 Order Lepidosteini
                   04 Order Amiadini
                   05 Order †Cephalaspidæ
                   06 Order †Placodermi M'Coy, 1848
                   07 Order †Acanthodini
                   08 Order †Pycnodontidæ (Agassiz, 1833)
                   09 Order †Cælacanthini
                   10 Order †Dipterini