WoRMS source details

Arnold, R. 1903. The paleontology and stratigraphy of the marine Pliocene and Pleistocene of San Pedro, California. Memoirs of the California Academy of Sciences 3:5–420.
133788
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2013-01-12 18:30:12Z
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Ivara Dall & Bartsch in Arnold, 1903 (original description)
Odostomia turricula Dall & Bartsch in Arnold, 1903 (original description)
Pyrgiscus Philippi, 1841 (subsequent type designation)