Cushman,J.A. (1928): Additional foraminifera from the Upper Eocene of Alabama . Contributions from the Cushman Foundation for Foraminiferal Research Vol. 4 p. 73-79
Cole,W.S. (1928): A foraminiferal fauna from the Chapapote Formation in Mexico . Bulletins of American paleontology Vol. 14 p. 3-32
Cushman,J.A. and Bermudez,P.J. (1949): Some Cuban species of Globorotalia . Contributions from the Cushman Foundation for Foraminiferal Research Vol. 25 p. 26-44
Bandy,O.L. (1949): Eocene and Oligocene foraminifera from Little Stave Creek, Clarke County, Alabama . Bulletins of American paleontology Vol. 32 p. 1-211
Bolli,H.M. (1957): Planktonic Foraminifera from the Eocene Navet and San Fernando formations of Trinidad, B.W.I. . Bull. U.S. natl. Mus. Vol. 215 p. 155-172
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