Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
Count: [f†f] 1p;7c;86o;538f; †1p;8c;99o;293f;53g;1s [4 May 2025]
   Phylum Chordata Bateson, 1885 - chordates
  Count: [f†f] 7c;86o;538f; †7c;99o;292f;53g;1s [4 May 2025]
     Subphylum Craniata auct.
    Count: [f†f] 4c;85o;536f; †6c;99o;292f;49g;1s [4 May 2025]
       Infraphylum Vertebrata Lamarck, 1801 - vertebrates
      Count: [f†f] 3c;84o;535f; †6c;99o;292f;49g;1s [4 May 2025]
         Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
        Count: [f†f] 2c;83o;532f; †2c;81o;255f;48g
           Grade †Placodermiomorphi [monotypic]
          Count: [†f] †1c;7o;25f [22 Mar 2025]
             Class †Placodermi McCoy, 1848 [paraphyletic?]
            Count: [†f] †7o;25f [22 Mar 2025]
               Order †Arthrodiriformes Grande & Eastman, 1986 - arthrodires see [unranked] Arthrodira Woodward, 1891
              Count: [†f] †15f
                 Suborder †Brachythoracoidei - brachythoracoids see Suborder Brachythoraci Gross, 1932
                Count: [†f] †10f
                   †Eubrachythoraci Miles, 1971
                  Count: [†f] †10f
                     †coccosteomorphs Stensiö, 1944 - coccosteomorphs
                    Count: [†f] †10f
                       01 Family †Buchanosteidae White, 1952
                      Count: -
                       02 Family †Camuropiscidae Dennis & Miles, 1979
                      Count: -
                       03 Family †Coccosteidae Asmuss, 1856
                      Count: -
                       04 Family †Dinichthyidae Newberry, 1885
                      Count: -
                       05 Family †Dunkleosteidae Stensiö, 1963, "nom. praeval."
                      Count: -
                       06 Family †Mylostomatidae Woodward, 1891
                      Count: -
                       07 Family †Panxiosteidae Wang, 1979
                      Count: -
                       08 Family †Selenosteidae Dean, 1901
                      Count: -
                       09 Family †Titanichthyidae Dean, 1901
                      Count: -
                       10 Family †Wuttagoonaspididae Ritchie, 1973, nom. praeval.
                      Count: -