Traits name details
original description
Suzuki, K. (1941). Some non-marine shells from the Oligocene Isikari series in the Isikari coal-field, HokkaidÅ. <em>Journal of the Faculty of Science, Imperial University of Tokyo, Section II.</em> 6: 1-11. page(s): 4-6, pl. 1, fig. 1a-c [details] Available for editors
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