Foraminifera source details
El Dawy, M. H. and Hewaidy, A. A. (2003). Biostratigraphy, paleobathymetry and biogeography of some Late Maastrichtian - Early Eocene Rotaliina from Egypt. Egyptian Journal of Paleontology 3: 55-86.
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El Dawy, M. H. and Hewaidy, A. A. (2003). Biostratigraphy, paleobathymetry and biogeography of some Late Maastrichtian - Early Eocene Rotaliina from Egypt. Egyptian Journal of Paleontology 3: 55-86
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Cibicidoides rigidus (Schwager, 1883) † (new combination reference)