Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
Count: [*†*] 3p;8c;66o;519f;3514g;510s;2ss; ‡3s; †1p;8c;86o;266f;698g;38s
   Phylum Chordata Bateson, 1885 - chordates
  Count: [*†*] 8c;66o;519f;3513g;510s;2ss; ‡3s; †7c;86o;265f;696g;38s
     Subphylum Craniata auct.
    Count: [*†*] 5c;62o;517f;3511g;510s;2ss; ‡3s; †7c;86o;265f;695g;38s
       Vertebrata Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
      Count: [*†*] 4c;61o;516f;3504g;505s;2ss; ‡3s; †7c;86o;265f;691g;36s
         Myopterygii Janvier, 1978 - myopterygians
        Count: [*†*] 3c;60o;513f;3494g;499s;2ss; ‡3s; †5c;74o;256f;651g;32s
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
          Count: [*†*] 3c;60o;513f;3494g;499s;2ss; ‡3s; †2c;65o;234f;595g;26s
             Grade †Placodermiomorphi [monotypic]
            Count: [†*] †1c;8o;25f;44g
               Class †Placodermi McCoy, 1848
              Count: [†*] †8o;25f;44g
                 Order †Arthrodiriformes Grande & Eastman, 1986 - arthrodires see [unranked] Arthrodira Woodward, 1891
                Count: [†*] †15f;15g
                   Suborder †Brachythoraci Gross, 1932
                  Count: [†*] †3f;3g
                     †Eubrachythoraci Miles, 1971
                    Count: [†*] †1f;1g
                       †coccosteomorphs Stensiö, 1944 - coccosteomorphs
                      Count: [†*] †1f;1g
                         1 Family †Coccosteidae Asmuss, 1856
                        Count: [†*] †1g