[Kingdom] Animalia Linnaeus, 1758 - animals
   Grade Enterozoa
     Grade Cœlomata
       Phylum Vertebrata (Lamarck, 1801)
         Branch Craniata Linnaeus, 1758
           Grade Gnathostoma
             A Subgrade Heterodactyla branchiata
             B Subgrade Pentadactyla branchiata
             C Subgrade Pentadactyla lipobranchia