original descriptionWalker, B. (1909). Notes on <i>Planorbis</i> II: <i>P. bicarinatus</i>. <em>The Nautilus.</em> 23(1): 1-10, pl. 1; 23(2): 21-32, pl. 2-3 (maps)., available online athttps://www.biodiversitylibrary.org/page/5314504 page(s): 9 [details]
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