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Showing 1 to 1 of 1 for “"Mollusks; Geology--North Dakota"”.
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Mollusks from Wisconsinan (Pleistocene) ice-contact sediments of the Missouri Coteau in central North Dakota
… 50 by 300 miles in extent) in central North Dakota.</p> <p>Fossil mollusks, contained in sediments deposited in contact with the stagnant ice at 40 sites, are represented by 23 species including polecypods of the families Unionidae and Sphaeriidae and gastropods of the families …