Keywords: FMIB 38254 Three-ridge, Quadrula undulata (Barnes), from James River, S Dak, upper pair; Blue-point, Quadrula picata (Say), from Illinois.jpeg check categories 26 August 2015 2 Three-ridge Quadrula undulata Barnes from James River S Dak upper pair; Blue-point Quadrula picata Say from Illinois River lower pair Subject Quadrula Freshwater mussels Tag Shellfish 1921 Cite book Fresh-water Mussels and Mussel Industries of the United States Coker Robert E Washington DC Government Printing Office 1921 Bulletin of the United States Bureau of Fisheries vol 36 1917-1918 Plate X Creator Robert Ervin Coker PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 38254 Images from the Freshwater and Marine Image Bank to check Robert Ervin Coker Shellfish |