Cushman, J. A.; Ozawa, Y. (1930). A Monograph of the Foraminiferal Family Polymorphinidae, Recent; Fossil. Proceedings of the United States National Museum. 77: 1-185.
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Cushman, J. A.; Ozawa, Y.
1930
A Monograph of the Foraminiferal Family Polymorphinidae, Recent; Fossil