original description
(of Bifidaria prototypus Pilsbry, 1899) Pilsbry, H. A. (1899). Descriptions of new species of Mexican land and freshwater mollusks. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 51(2): 391-402., available online at https://www.biodiversitylibrary.org/page/6389576
page(s): 400 [details]
original description
(of Bifidaria cochisensis oligobasodon Pilsbry & Ferriss, 1910) Pilsbry, H. A. & Ferriss, J. H. (1910). Mollusca of the southwestern states: IV. The Chiricahua Mountains, Arizona. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 62 (1): 44-147, plates 1-14., available online at https://www.biodiversitylibrary.org/page/26294157
page(s): 141, fig. 34a [details]
basis of record
Thompson, F. G. (2011). An annotated checklist and bibliography of the land and freshwater snails of México and Central America. <em>Florida Museum of Natural History Bulletin.</em> 50(1): 1-299. [details] Available for editors [request]
From editor or global species database