Identification
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Caption
Great Lakes area freshwater snails, introduced species. The two species of Cipangopaludina were introduced from East Asia, Viviparus georgianus from the southern U.S.A., and Valvata piscinalis, Bythinia tentaculata and Radix auricularia from Europe.
Dr. John B. Burch, Ph.D.
(photographer, copyright holder), Mollusk Division, Museum of Zoology, University of Michigan

