Cushman,J.A. and Bermudez,P.J. (1937): Further new species of foraminifers from the Eocene of Cuba . Cushman Lab. Foraminiferal Res. Contrib Vol. 13
Bermudez,P.J. (1938): Foraminiferos pequenos de las margas eocenicas de Guanajay, Provincia Pinar del Rio, Cuba . Mem. Soc. Cubana Hist. Nat. Vol. 12 p. 1-26
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
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
|