Cushman, J. A.; Renz, H. H. (1947). The foraminiferal fauna of the Oligocene, Ste. Croix Formation, of Trinidad, B. W. I. Contributions from the Cushman laboratory for foraminiferal research, Special Publication. 22: 1-46.
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Cushman, J. A.; Renz, H. H.
1947
The foraminiferal fauna of the Oligocene, Ste. Croix Formation, of Trinidad, B. W. I.
Contributions from the Cushman laboratory for foraminiferal research, Special Publication