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Giant Floater, Pyganodon grandis
Lake Minatare, Scottsbluff County, 119mm
Yankee Hill Reservoir,
Lancaster County, 130mm,
dorsal view
West Fork Big Blue River,
Adams County, 95mm
Chadron City Reservoir,
Dawes County, 75mm,
beak sculpture
Missouri River, Dixon
County, 35mm juvenile
West Fork Big Blue River,
York County, 168mm
Yankee Hill Reservoir,
Lancaster County, 130mm,
anterior view
Cross section of Giant floater, 130mm, anterior end is to the left