original description
Baker, F. C. (1942). A new <em>Gyraulus</em> from the Pleistocene of California and a new <em>Parapholyx</em> from a supposed Pliocene deposit in Oregon. <em>The Nautilus.</em> 55(4): 130-132, pl. 8, figs. 17-19., available online at https://www.biodiversitylibrary.org/page/8520043
page(s): 130-131, pl. 8, figs 17-18 [details]
From editor or global species database
Type locality South end of Lower Klamath Lake, ca. 8 miles S of Oregon state line, Siskiyou County, California, United States; late Pleistocene [details]