About Gonidea angulata (I.Lea, 1838)
Gonidea angulata (I.Lea, 1838), commonly known as the western ridged mussel, has a shell that measures 125 mm in length, 65 mm in height, and 40 mm in width. Historically, this species inhabited river basins that cover parts of the western U.S. states of California, Idaho, Nevada, Oregon, and Washington, as well as the Canadian province of British Columbia.