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Beckman, J.-P., Bolli, H.M., Perch-Nielsen, K., Proto Decima, F., Saunders, J.B., and Toumarkine, M., 1981. Major calcareous nannofossil and foraminiferal events between the middle Eocene and early Miocene. Palaeogeogr., Palaeoclimatol., Palaeoecol., 36:155—190.

Bukry, D., 1973. Low-latitude coccolith biostratigraphic zonation. In Edgar, N.T., Saunders, J.B., et al., Init. Repts. DSDP, 15: Washington (U.S. Govt. Printing Office), 685-703.

Martini, E., 1971. Standard Tertiary and Quaternary calcareous nannoplankton zonation. In Farinacci, A. (Ed.), Proc. 2nd Int. Conf. Planktonic Microfossils Roma: Rome (Ed. Tecnosci.), 2:739-785.

Martini, E., and Muller, C., 1986. Current Tertiary and Quaternary calcareous nannoplankton stratigraphy and correlations. Newsl. Stratigr., 16:99-112.

Okada, H., and Bukry, D., 1980. Supplementary modification and introduction of code numbers to the low-latitude coccolith biostratigraphic zonation (Bukry, 1973; 1975). Mar. Micropaleontol., 5:321-325.

Perch-Nielsen, K., 1985. Cenozoic calcareous nannofossils. In Bolli, H.M., Saunders, J.B., and Perch-Nielsen, K. (Eds.), Plankton Stratigraphy: Cambridge (Cambridge Univ. Press), 427-554.

Whitmarsh, R.B., Pinheiro, L.M., Miles, P.R., Recq, M., and Sibuet, J.C., 1993. Thin crust at the western Iberia ocean-continent transition and ophiolites. Tectonics, 12:1230-1239.

Wise, S.W., Jr., and Mostajo, E.L., 1983. Correlation of Eocene-Oligocene calcareous nannofossil assemblages from piston cores taken near Deep Sea Drilling Project Sites 511 and 512, southwest Atlantic Ocean. In Ludwig, W.J., Krasheninnikov, V.A., et al., Init. Repts. DSDP, 71 (Pt. 2): Washington (U.S. Govt. Printing Office), 1171-1180.

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