Class †Placodermi McCoy, 1848
   Order †Arthrodira Woodward, 1891 see [unranked] Arthrodira Woodward, 1891
     Genus †Antinosteus "Lelièvre, 1984", orth. inval. see Genus Antineosteus Lelièvre, 1984
       1 †Antinosteus lehmani "Lelièvre, 1984", comb. inval. see Antineosteus lehmani Lelièvre, 1984