Keywords: FMIB 38248 Kidney-shell, Ptychobrancchus phaseolus; marsupium occupying entire lower border of outer gills and much folded.jpeg check categories 18 September 2015 6 Kidney-shell Ptychobrancchus phaseolus; marsupium occupying entire lower border of outer gills and much folded Subject Freshwater mussels Ptychobranchus Tag Shellfish 1922 Cite book Natural History and Propagation of Fresh-Water Mussels Bulletin of the United States Bureau of Fisheries vol 37 1919-1920 Coker R E ; Shira A F ; Clark H Walton; Howard A D Washington DC Government Printing Office 1922 Plate XIII-5 Creator Robert Ervin Coker A F Shira Creator Howard Walton Clark A D Howard PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 38248 Images from the Freshwater and Marine Image Bank to check Robert Ervin Coker A F Shira Howard Walton Clark A D Howard Ptychobranchus Shellfish |