Animal Pictures Archive mobile
Query: shellResult: 306th of 1045
Image of: Physella gyrina (tadpole physa)
Subject: Image of: Physella gyrina (tadpole physa)
Source: http://animaldiversity.ummz.umich.edu/site/resou...
059.rjb1.jpg
Resolution: 258x240 File Size: 5817 Bytes Upload Date: 2008:05:13 14:01:26

Image of: Physella gyrina (tadpole physa)


Image of: Physella gyrina (tadpole physa)

ADW: 059.rjb1.jpg


Caption
Physella gyrina
. The light band (varix) on the shell shown here was caused by the snail's much slower growth during the winter. While the shell growth was slower at the varix, a thicker shell was produced at this site (which masks the dark mantle [skin covering the viscera] of the snail's body, that elsewhere shows through the translucent shell).
Contributors
Dr. John B. Burch, Ph.D.
(photographer, copyright holder), Mollusk Division, Museum of Zoology, University of Michigan

shell
306/1045
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