Two-ridge Rams-Horn Helisoma anceps (Menke, 1830)    
Kingdom Animalia   >   Phylum Mollusca   >   Class Gastropoda   >   Order Basommatophora   >   Family Planorbidae   >   Genus Helisoma   

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A Two-ridge Rams-Horn in Calvert Co., Maryland (7/30/2017). Verified by Robert Dillon (FWGNA). Photo by Robert Aguilar, SERC. (MBP list)


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