Image: Valvata utahensis shell
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Valvata_utahensis_shell.jpg (384 × 384 pixels, file size: 24 KB, MIME type: image/jpeg)
Description: drawing of the shell of Valvata utahensis
Title: Valvata utahensis shell
Credit: Walker, B. (March 6), 1902. A Review of the Carinate Valvatas of the United States. The Nautilus, volume 15, number 11: 121—125. Page p. 122., figure 7.
Author: Bryant Walker (1856-1936, U.S.A.)
Permission: public domain
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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