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FMIB Squawfoot edentulus Say upper pair Papershwll Anodonta imbecillis Say lower pair.jpeg check categories August Squawfoot edentulus Say upper pair Papershwll Anodonta imbecillis Say lower pair Subject Stophitus Anodonta Freshwater mussels Tag Shellfish Cite book Freshwater Mussels and Mussel Industries of the United States