Traits taxon details
original description
(of ) Shumard, B. F. (1855). Dr. B. F. Shumard's report - Description of a Geological Section, on the Mississippi River, from St. Louis to Commerce. In: Swallow, G. C. (Ed.) The First and Second Annual Reports of the Geological Survey of Missouri. James Lusk, Jefferson City, pp. 137-208., available online at https://books.google.de/books?redir_esc=y&hl=de&id=Es9oAAAAcAAJ page(s): 206, pl. C, fig. 15 [details] 
basis of record
Hutchinson, T. W.; Stumm, E. C. (1965). Upper Devonian and Lower Mississippian pectinoid pelecypods from Michigan, Ohio, Indiana, Iowa, and Missouri. <em>Contributions from the Museum of Paleontology, The University of Michigan.</em> 20(1): 1-48, 7 pls. page(s): 35-37, pl. 7, figs 4, 5, 8, 12, table 11 [details] Available for editors 
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