Küpper, K. (1955). Upper Cretaceous foraminifera from the "Franciscan series," New Almaden District, California. Contributions from the Cushman Foundation for Foraminiferal Research. 6(3): 112-118.
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Küpper, K.
1955
Upper Cretaceous foraminifera from the "Franciscan series," New Almaden District, California
Contributions from the Cushman Foundation for Foraminiferal Research