Dall, W. H. & Bartsch, P. (1907). The pyramidellid mollusks of the Oregonian faunal area. Proceedings of the United States National Museum. 33(1574): 491-534, pls. 44-48 [December 31].
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Dall, W. H. & Bartsch, P.
1907
The pyramidellid mollusks of the Oregonian faunal area.