Cushman, J. A.; Schenck, H. G. (1928). Two foraminiferal faunules from the Oregon Tertiary. University of California publications, Bulletin of the Department of Geological Sciences. 17: 305-324.
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Cushman, J. A.; Schenck, H. G.
1928
Two foraminiferal faunules from the Oregon Tertiary
University of California publications, Bulletin of the Department of Geological Sciences