Burch, Jack
Identification
Caption
Land snails from Mexico in the family Polygyridae. Many land snails have barriers ("teeth") in their shell apertures, which help keep out predators, e.g., beetles. Scanning electron microscope studies show that the surface of the barriers are not smooth, but consist of the jagged edges of calcium carbonate crystals, with the crystal edges directed outward.
- Type
- Photo
- Subject
- Specimen
Contributors
John B. Burch (photographer; copyright holder), Mollusk Division, Museum of Zoology, University of Michigan-Ann Arbor
Conditions of Use
This resource may not be downloaded and used without permission of the copyright holder except for educational fair use.
To cite this page: Burch, J.2004. "10.rjb2.jpg" (On-line), Animal Diversity Web. Accessed March 20, 2025 at https://animaldiversity.org/collections/contributors/jack_burch/10.rjb2/
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This material is based upon work supported by the National Science Foundation Grants DRL 0089283, DRL 0628151, DUE 0633095, DRL 0918590, and DUE 1122742. Additional support has come from the Marisla Foundation, UM College of Literature, Science, and the Arts, Museum of Zoology, and Information and Technology Services.
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