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Identification

Helisoma anceps (two-ridge rams-horn)

 

Helisoma royalense

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Image of: Helisoma anceps (two-ridge rams-horn), Helisoma royalense

Caption

Helisoma anceps and H. royalense. Helisoma anceps has a wide distribution in eastern North America, but H. royalense is known only from Isle Royal, Michigan.

Contributors

Dr. John B. Burch, Ph.D. external link (photographer, copyright holder), Mollusk Division, Museum of Zoology, University of Michigan


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University of Michigan Museum of Zoology National Science Foundation Citation: Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed November 26, 2009 at http://animaldiversity.org.
Sponsored in part by the Interagency Education Research Initiative,
the Homeland Foundation and the University of Michigan Museum of Zoology.
This material is based upon work supported by the National Science Foundation under Grants DUE-0633095 and DRL-0628151.
The ADW Team gratefully acknowledges their support. Report Error — Comment
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