†Placodermi McCoy, 1848 †Arthrodira Woodward, 1891 †Brachythoraci Gross, 1932 †Eubrachythoraci Miles, 1971 †Coccosteomorphi Stensiö, 1944 - coccosteomorphs Family †Incisoscutidae Denison, 1984 see Family Camuropiscidae Dennis & Miles, 1979