Traits taxon details
original description
Keen, A. M. (1943). New mollusks from the Round Mountain Silt (Temblor) Miocene of California. <em>Transactions of the San Diego Society of Natural History.</em> 10: 25-60., available online at https://www.biodiversitylibrary.org/page/4268470 page(s): 49, pl. 4, fig. 15 [details]
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