Traits taxon details
original description
(of ) Sardeson F.W. (1892). The range and distribution of the Lower Silurian fauna of Minnesota with descriptions of some new species. <em>Minnesota Academy of Natural Science Bulletin.</em> 3: 326-343. page(s): 335, pl. 6, figs. 5, 6 [details]
basis of record
Ulrich, E. O.; Scofield, W. H. (1897). The Lower Silurian Gastropoda of Minnesota. <em>The Geology of Minnesota.</em> 3(2): 813-1081, pls. 61-82., available online at https://www.biodiversitylibrary.org/page/14923788 page(s): 831, pl. LXI, figs. 16-20 [details]
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