original description
Cooper, J. G. (1867). <i>Geographical catalogue of the Mollusca found west of the Rocky Mountains, between latitudes 33° and 49° north</i>. San Francisco: Geological Survey of California. 40 pp.
page(s): 25 [details]
additional source
Pilsbry, H. A. (1893). A synonym of <i>Leptothyra</i>. <em>The Nautilus.</em> 7(7): 84., available online at https://www.biodiversitylibrary.org/page/43044522 [details]
subsequent type designation
Coan, E.V. (1986). Some additional taxonomic units that first appear in publications by J. G. Cooper. <em>The Nautilus.</em> 100(1): 30-32., available online at https://www.biodiversitylibrary.org/page/8277229
page(s): 31; note: type species designation [details]
From editor or global species database
From other sources