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Showing 1 to 1 of 1 for “"Fossil--North Dakota; Paleoecology"”.
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Fort Union (Paleocene) mollusks from southern Golden Valley and southeastern Billings counties, North Dakota
… Valley, and Slope Counties in southwestern North Dakota. Tongue River sediments contain all nine of the species which include: two unionids, Plesielliptio priscus (Meek and Hayden) and Rhabdotophorus senec tus (White); one corbulid, Bicorbula mactriformis (Meek and Hayden); and six …