Ilyina, A. P. (1960). Lower Oligocene Mollusks of the Mangyshlak Peninsula (Nizhneoligocenovye molljuski Mangyshlaka). <em>Paleontological Sbornik.</em> 2, 265–298, 4 pls (in Russian). page(s): 292, pl. 4/6 [details]
original descriptionIlyina, A. P. (1960). Lower Oligocene Mollusks of the Mangyshlak Peninsula (Nizhneoligocenovye molljuski Mangyshlaka). <em>Paleontological Sbornik.</em> 2, 265–298, 4 pls (in Russian). page(s): 292, pl. 4/6 [details]
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