Image: Vertigo arctica shell
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Description: Drawing of the shell of Vertigo arctica
Title: Vertigo arctica shell
Credit: Pilsbry H. A. & Charles Montague Cooke Jr. 1918-1920. Manual of Conchology. Second series: Pulmonata. Volume 25. Pupillidae (Gastrocoptinae, Vertigininae). Philadelphia. Plate 10, figure 8. Cropped and retouched by User:Snek01.
Author: Pilsbry H. A. & Charles Montague Cooke Jr.
Usage Terms: Public domain
License: Public domain
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