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10.rjb2

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.

About this image

Identification: Polygyridae
Contributors: John B. Burch, University of Michigan-Ann Arbor
photographer copyright holder
Subjects: Type Photo; Subject Specimen

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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 {%B %d, %Y} at https://animaldiversity.org/collections/contributors/jack_burch/10.rjb2/

Last updated: 2004-53-01 / Generated: 2025-09-15 01:12