Traits taxon details
original description
(of ) Cooper, J.G. (1866). Description of a new California Helix, with notes on others already described. Proceedings of the California Academy of Sciences, (1) 3:259-261. page(s): 259 [details]
basis of record
InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]
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