Bolli, H. M., 1951- The genus Globotruncana in Trinidad, B.W.I.J. Paleontol., 25, 170-188.
Bolli, H. M., 1966- Zonation of Cretaceous to Pliocene marine sediments based on Planktonic foraminifera . Boletin Informativo Asociacion Venezolana de Geologia , Mineriay Petroleo, 2-35.
Bolli, H. M., Beckman, J. P., Saunders, J. B., 1994- Benthic Foraminiferal Biostratigraphy of the South Caribbean Region, Cambridge University.
Bolli, M. H., Saunders, J. B. and Perch- Nielsen, K. 1985- Plankton Stratigraphy ; Cambridge University Press, Cambridge, vol.I, pp.87-154.
Caron, M., 1985- Cretaceous Planktonic Foraminifera, in Boli et al.: Plankton Stratigraphy, Cambridge University Press, P.17-86 .
Holbourn, A., Kuhnt, W., and Soeding, E., 2001- Atlantic paleobathymetry, paleoproductivity and paleocirculation in the late Albian: the benthic foraminiferal record; Palaeogeography.Palaeoclimatology, Palaeoecology 170: 171-196.
Li, L. and Keller, G., 1999- Variability in Late Cretaceous climate and deep waters: evidence from stable isotopes; Marine Geology 161: 171-190. northwestern Tunisia.
Li, L., Keller, G. and Stinnesbeck, W., 1999- The Late Campanian and Maastrichtian in: Paleoenvironmental inferences from lithology, macrofauna and benthicforaminifera. Cretaceous Research 20, 231-252.
Loeblich, A. R. and Jr- Tappan, H. 1988- Foraminiferal General and their Classification : Van Nostrand Reinhold Company , New yourk ,2 Volumes, 970p. plus 212p, and 847 pl.
Premoli Silva, I. and Verga, D., 2004- Practical Manual of Cretaceous Planktonic Foraminifera,course 3, in Verga, D., and Rettori, R. (Editors), International School on PlanktonicForaminifera: Universities of Perugia and Milano, Tipografiadi di Pontefelcino, Perugia, Italy,283 p.
Robaszynski, F. and Caron, M. (Coordinators), 1979- Atlas de Foraminiferes Planctoniques du Cretace Moyen(Mer Boreale et Tethys) , Cahiers de Micropaleontologie (1) : 1-185p.
Robaszynski, F., Caron, M., Gonzalez Donoso, J. M., Wanders, A. A. H., 1988- Atlas of Late Cretaceous Globotruncana.
Sliter, W.V. and Baker, R. A., 1972- Cretaceous bathymetric distribution of benthic foraminifera; Journal of Foraminiferal Research 2: 167-183.
Sliter, W.V. and Leckie, R. M., 1993- Cretaceous planktonic foraminifers and depositional environments from the Ontong Java Plateau with emphasis on Sites 803 and 807. In Berger,W. H., Kroenke, L.W., Mayer, L.A., et al., Procceding ODP Science Results, 130: College. Station, TX (Ocean Drilling Program), 63-84.