Chordata Bateson, 1885 - chordates Class †Arthrodira Woodward, 1891 - arthrodires see Order Arthrodiriformes Grande & Eastman, 1986 Order †Arthrothoraci see Order Arthrodiriformes Grande & Eastman, 1986 Family †Phyllolepidae Woodward, 1891 see Family Phyllolepididae