†Placodermi McCoy, 1848
   †Arthrodira Woodward, 1891
     †Brachythoraci Gross, 1932
       †Eubrachythoraci Miles, 1971
         †Pachyosteomorphi Stensiö, 1944
           Superfamily †Dunkleosteoidea Stensiö, 1963
             Family †Dunkleosteidae Stensiö, 1963
               1 Genus †Eastmanosteus Obruchev, 1964 [paraphyletic]
               1.n.1 Genus †Golshanichthys Lelièvre, Janvier & Goujet, 1981 [monotypic]
               1.n.2? Genus †Hussakofia Cossmann, 1910 [monotypic]
               1.n.3.1 Genus †Westralichthys Long, 1987 [monotypic]
               1.n.3.2 Genus †Dunkleosteus Lehman, 1956