Traits taxon details
original description
(of ) Conrad, T. A. (1855). Report of Mr. T. A. Conrad on the fossil shells collected In California by W. P. Blake, geologist of the expedition, under the command of Lieutenant R. S. Williamson, United States Topographical Engineers,1853. In: Description of the fossils and shells collected in California by William P. Blake, Geologist of the United States Pacific Railroad Survey in California, under the command of Lieut. R. S. Williamson, in 1853-54. Article 1 of Appendix to the Preliminary Geological Report of William P. Blake, Geologist of the Survey in California Under the Command of Lieut. R. S. Williamson. Palæontology, pp. 5-21. Washington., available online at https://doi.org/10.5962/bhl.title.19489 page(s): 11; note: genus with question mark [details] 
basis of record
Squires, R. L. (2015). Northeast Pacific record of the Paleogene genus <i>Pseudoperissolax</i> (Neogastropoda: Muricidae: Muricinae) and its paleobiogeography. <em>Journal of Paleontology.</em> 89(4): 576-588., available online at https://doi.org/10.1017/jpa.2015.41 page(s): 581-585, figs 3.12-3.16, 4.1-4.17 [details] Available for editors 
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