Classification of the genus Coptostoma
G. †Coptostoma Cossmann 1899
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†Cancellaria (Coptostoma) posunculensis Anderson and Martin 1914
†Coptostoma punjabense Eames 1952
†Coptostoma rakhiense Eames 1952
†Coptostoma ulmulum Harris and Palmer 1947
†Coptostoma ulmulum secutorum Harris and Palmer 1947