Planorbella columbiensis explained

Planorbella columbiensis, commonly known as the caribou ramshorn, is a species of freshwater snail found in only one site, on Lac la Hache, in British Columbia, Canada.

This species is listed as "possibly extinct". Its last observation was in 1945.^[1]

Description

The height of the shell can be as much as, and its greater diameter .

External links

• Book: Baker . F.C. . The molluscan family Planorbidae. Collation, revision, and additions by Harley Jones Van Cleave. xxxvi . 1945 . University of Illinois Press . Urbana . 1–530 . 24 July 2024.

Notes and References

1. Johnson, P.D., A.E. Bogan, K.M. Brown, N.M. Burkhead, J.R. Cordeiro, J.T. Garner, P.D. Hartfield, D.A.W. Lepitzki, G.L. Mackie, E. Pip, T.A. Tarpley, J.S. Tiemann, N.V. Whelan, and E.E Strong . Conservation status of freshwater gastropods of Canada and the United States . Fisheries . 2013 . 38 . 6 . 247–282. 10.1080/03632415.2013.785396 . 2013Fish...38..247J .