basis of recordGrant, U. S. & Gale, H. R. (1931). Catalogue of the marine Pliocene and Pleistocene Mollusca of California and adjacent region. <em>Memoirs of the San Diego Society of Natural History.</em> 1: 1036 pp., 32 pls., available online athttps://www.biodiversitylibrary.org/page/2834182[details]
Present Inaccurate Introduced: alien Containing type locality