Classification of the genus Cymatospira
G. †Cymatospira Knight 1942
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†Cymatospira alternodosa Whitfield 1882
†Cymatospira montfortianus Norwood and Pratten 1855
†Cymatospira welleri Thein and Nitecki 1974
†Knightites (Cymatospira) montfortianus discordis Hoare et al. 1997