Traits name details
original description
Arnold, R. (1906). The Tertiary and Quaternary pectens of California. <em>U.S. Geological Survey Professional Paper.</em> 47: 1-264, 53 pls., available online at https://doi.org/10.5962/bhl.title.13754 page(s): 105, pl. 34, fig. 3, pl. 35, fig. 1, 1a [details]
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