basis of recordPalmer, K.V.W. (1958) Type specimens of marine Mollusca described by P. P. Carpenter, from the West Coast (San Diego to British Columbia). The Geological Society of America Memoir, 76, 1–376., available online athttp://www.biodiversitylibrary.org/bibliography/6535 page(s): 279 [details]
redescriptionClark R.N. (1994) Review of the genus <i>Placiphorella</i> Dall, 1879, ex Carpenter MS (Polyplacophora: Mopaliidae) with descriptions of two new species. <i>The Veliger</i> 37(3): 290-311. [1 July 1994], available online athttps://biodiversitylibrary.org/page/42464996[details]
Present Inaccurate Introduced: alien Containing type locality