Classification of Gardiner 1966
Or. Cephalaspida Fischer 1883
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Fm. †Cephalaspidae Huxley 1861
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G. †Cephalaspis Agassiz 1835
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†Cephalaspis campbelltonensis Whiteaves 1881
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Invalid names: Cephalaspis whiteavesi Traquair 1890 [synonym]
†Cephalaspis canadensis Robertson 1936
†Cephalaspis dawsoni Lankester 1870
†Cephalaspis jexi Traquair 1893
†Cephalaspis novaescotiae Denison 1955
†Cephalaspis westolli Russell 1954
Invalid names: Ateleaspidae Traquair 1899 [empty]
Or. †Hybodontiformes Patterson 1966
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