Classification of the genus Polacanthus
G. †Polacanthus Fox 1866
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†Polacanthus foxii Grabau 1921
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Invalid names: Euacanthus vectianus Owen 1897 [objective synonym], Polacanthus becklesi Hennig 1924 [synonym]
†Polacanthus rudgwickensis Blows 1996
Invalid names: Euacanthus Owen 1897 [objective synonym], Vectensia Delair 1982 [synonym]