1. Palynology and age of the Keri-Keri formation, Nigeria;Adegoke;Rev. Espanola Micropaleontol.,1978
2. New species of dinoflagellate cysts from the palaeocene of the Anambra Basin, southeastern Nigeria;Antolinez;Palynology,2007
3. Ichnofossils from the Imo formation and their palaeoenvironmental significance;Anyanwu;Niger. J. Min. Geol.,1990
4. Sobre el paleomicroplancton del Terciario Inferior de Rio Turbio Provincia de Santa Cruz;Archangelsky;Ameghiniana,1969
5. Palaeocene microfossil from the Imo shale in Anambra state;Arua;J. Min. Geol.,1980