MolluscaBase name details
original description
(of Medionidus C. T. Simpson, 1900) Simpson, C. T. (1900). New and unfigured Unionidae. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 52: 74-86, pls 1-5., available online at http://biodiversitylibrary.org/page/24693954
page(s): 77 [details]
basis of record
Simpson, G. G. (1937). The Fort Union of the Crazy Mountain Field, Montana, and its mammalian fauna. <em>United States National Museum, Bulletin.</em> 169: 1-287.
page(s): 17, 59 [details]