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On the identification of Schizopyga californiana Conrad, a California Pliocene gastropod



On the identification of Schizopyga californiana Conrad, a California Pliocene gastropod



Proc Calif Acad Sci 33(2): 47-58



Widely differing identifications of the Pliocene gastropod originally described as Schizopyga californiana Conrad (1856), but now placed in the genus Nassarius, have resulted from a vague original description, poor figure, and missing type specimen. Isolated exposures of marine upper Pliocene strata in northwestern Santa Clara County, California, considered to be laterally equivalent to the generalized type locality of this species, contain 2 species of Nassarius. One, a rather small slender species particularly characteristic of these strata, closely resembles the type figure and is believed to be Conrad's species. Several other late Cenozoic nassariids from California have at one time been figured or identified as N. californianus. They are N. coalingensis (Arnold), N. delosi (Woodrlng), N. grammatus (Dall), N. iniquus (Stewart), N. moranianus (Martin), and N. rhinetes Berry. Nassarius californianus is characteristic of marine Pliocene formations from the San Francisco Bay area southward to Santa Maria Basin.

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Accession: 019599056

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