Cushman, J. A.; Church, M. A. (1929). Some Upper Cretaceous Foraminifera from near Coalinga, California. Proceedings of the California Academy of Sciences. (4) 18 (16): 497-530.
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Cushman, J. A.; Church, M. A.
1929
Some Upper Cretaceous Foraminifera from near Coalinga, California.