Classification of the genus Cycloceras
G. †Cycloceras M'Coy 1844
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†Cycloceras hsiangtanense Zhao 1954
†Cycloceras laevigatum M'Coy 1844
†Cycloceras olorus Hall 1879
†Cycloceras waageni Kittl 1903
Invalid names: Perigrammoceras Foerste 1924 [synonym]