MolluscaBase taxon details
original description
Weller, S.; St. Clair, S. (1928). Geology of Ste. Genevieve County, Missouri. Vol. XXII, second series. Missouri Bureau of Geology and Mines, Rolla, Mo., 352 pp.
page(s): 68 [details] Available for editors [request]
additional source
Mazaev A.V. (2016). A new species of the genus <i>Medfracaulus</i> from the Upper Carboniferous of the Moscow Basin; Morphology and taxonomy and the family Ptychocaulidae (Gastropoda). <em>Paleontologicheskii Zhurnal.</em> 2016(3): 14-20., available online at https://link.springer.com/content/pdf/10.1134/S0031030116010068.pdf?pdf=button [details]