Identification
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Caption
Stagnicola elodes (Say).This is a common freshwater snail of northern North America. It exhibits some morphological variation over its wide range, so it has been named as a “new,” and different, species a number of times, resulting in a considerable synonymy (two or more different names applied to the same species. Also, differing ecological conditions can affect the morphology, which has resulted in more synonyms.
Dr. John B. Burch, Ph.D. 
(photographer, copyright holder), Mollusk Division, Museum of Zoology, University of Michigan
