original description
Mayer, C. (1869). Mollusca. In: Heer, O. (Ed.) Flora Fossilis Alaskana. Fossile Flora von Alaska. <em>Kungliga Svenska Vetenskaps-Akademiens Handlingar.</em> 8 (4): 40-41., available online at https://www.biodiversitylibrary.org/page/7463194
page(s): 40-41 [details]
From editor or global species database
Type locality "In sinu Anglorum" (Coal Cove near Port Graham, Kenai Peninsula), Alaska, USA; Seldovian, early to middle Miocene [details]