original description
Oldroyd, I. S. (1920). New species of West Coast shells. <em>The Nautilus.</em> 33(4): 135-136, pl. 4, figs. 1-6., available online at https://www.biodiversitylibrary.org/page/27059754
page(s): 136, pl. 4, figs. 5-6 [details]
additional source
Valentich-Scott P. (1998). Class Bivalvia. In: Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel. The Mollusca Part 1 – The Aplacophora, Polyplacophora, Scaphopoda, Bivalvia and Cephalopoda. Santa Barbara Museum of Natural History. volume 8: 97-173. [details]
source of synonymy
Coan E.V. & Kellogg M.G. (1990). The malacological contributions of Ida Shepard Oldroyd and Tom Shaw Oldroyd. <em>The Veliger.</em> 33(2): 174-184. [details]
From editor or global species database
Type locality San Juan Island, Puget Sound [Washington] [details]