- Source: Vertigo extima
Vertigo extima is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusc in the family Vertiginidae, the whorl snails.
Description
The length of the shell attains 3 mm, its diameter 1¾ mm (millimeters). This species mode of locomotion is mucus meditated gliding.
Distribution
Vertigo extima is usually found in northern Scandinavia, northern Siberia, Northern Labrador, central quebec and in western Alaska. Its distribution covers an area from 5000 to 20,000 square kilometers (about 2000 to 8000 square miles).
References
Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017
Sysoev, A. V. & Schileyko, A. A. (2009). Land snails and slugs of Russia and adjacent countries. Sofia/Moskva (Pensoft). 312 pp., 142 plates
External links
Westerlund, C. A. (1876). Neue Binnenmollusken aus Sibirien. Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft. 8 (8/9): 97-104, Frankfurt am Main
