Classification of the genus Rhymmoceras
G. †Rhymmoceras Ruzhencev 1958
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†Rhymmoceras gracilentum Ruzhentsev 1958
†Rhymmoceras perlatum Ruzhentsev and Bogoslovskaya 1971
†Rhymmoceras spatiosum Ruzhentsev and Bogoslovskaya 1971
†Rhymmoceras vermiculatum Ruzhentsev 1958