U.S. Fish and Wildlife Service
Back to Freshwater Mussels of the Upper Mississippi River System home page.Freshwater Mussels of the Upper Mississippi River System Link to USGS home page.
camera.gif Image Library
Mountains of shells rose up alongside the Mississippi as clammers made a living harvesting mussels to supply the button industry.
mountains of shells
Source: Oscar Grossheim Collection, Musser Public Library, Iowa

Species Identification and LocationThreatened and Endangered MusselsLife HistoryEcology Mussel Harvest on the RiverCurrent ThreatsMussel Conservation ActivitiesOngoing Studies and ProjectsMultimediaTeacher ResourcesFrequently Asked QuestionsGlossaryReferencesLinks to Other Mussel Sites


Department of the InteriorU.S. Fish & Wildlife ServiceU.S. Geological Survey
Last updated on February 4, 2003