Classification of the genus Orygmaspis
G. †Orygmaspis Resser 1937
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Subg. †Orygmaspis (Parabolinoides) Frederickson 1949
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†Orygmaspis (Parabolinoides) billingsi Ludvigsen et al. 1989
†Orygmaspis (Parabolinoides) richardsoni Ludvigsen et al. 1989
†Parabolinoides bucephalus Belt 1868
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Invalid names: Conocoryphe williamsoni Salter 1873 [synonym]
†Parabolinoides calvilimbata Westrop 1986
Invalid names: Bernia Frederickson 1949 [synonym]