Planorbella columbiensis (F.C. Baker, 1945)

Caribou ramshorn, Caribou rams-horn



Taxonomy & Nomenclature



Conservation Status


Last record: 1945 (Ormes & Lepitzki, 2017)

IUCN RedList status: Critically Endangered (Possibly Extinct)



Lac La Hache, British Columbia (central), Canada


Biology & Ecology










Cowie, Robert H., Régnier, Claire, Fontaine, Benoît, and Bouchet, Philippe. (2017). Measuring the Sixth Extinction: what do mollusks tell us? The Nautilus 131(1): 3-41.

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.S. Strong. 2013. Conservation status offreshwater gastropods of Canada and the United States.Fisheries 38: 247-282.

Ormes, M. & Lepitzki, D. 2017. Planorbella columbiensis (errata version published in 2018). The IUCN Red List of Threatened Species 2017: e.T69626424A123785622. Accessed on 09 July 2022.


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