Traits taxon details
original description
Worthen, A. H. (1884). Descriptions of two new species of Crustacea, fifty-one species of Mollusca, and three species of crinoids, from the Carboniferous Formation of Illinois and adjacent states. <em>Bulletin of the Illinois State Museum of Natural History.</em> 2, 1-27., available online at https://www.biodiversitylibrary.org/page/8570931 page(s): 8 [details]
basis of record
Mazaev A.V. (2019). Lower Permian Gastropods of Shakhtau (Asselian–Sakmarian Boundary Beds, Southern Cisuralia). <em>Paleontological Journal.</em> 53(12): 1237-1345. page(s): 1325 [details] Available for editors
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