Cushman, J. A.; Stewart, R. E.; Stewart, K. C. (1930). Tertiary foraminifera from Humboldt County, California. A preliminary survey of the fauna. Transactions of the San Diego Society of Natural History. 6(2): 41-94.
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Cushman, J. A.; Stewart, R. E.; Stewart, K. C.
1930
Tertiary foraminifera from Humboldt County, California. A preliminary survey of the fauna
Transactions of the San Diego Society of Natural History