1. Ecology of foraminifera in Northeastern Gulf of Mexico;Bandy;US Geological Survey Professional Paper,1956
2. Bermudez, P.J., 1949. Tertiary Smaller Foraminifera of the Dominican Republic. Cushman Laboratory for Foraminiferal Research, Special Publication 18, p. 322.
3. A new geochemical classification of sedimentary environments;Berner;Journal of Sedimentary Petrology,1981
4. Blow, W. H., 1969. Late Middle Eocene to Recent planktonic foraminiferal biostratigraphy. In: Proceedings of the First International Conference on Planktonic Microfossils, vol. 1. Geneva, 1967, pp. 199–422.
5. Planktonic foraminifera from the Oligocene–Miocene Cipero and Lengua Formations of Trinidad;Bolli;BWI Bulletin United States National Museum,1957