1. Abubakar, M.B., 2005. Biostratigraphy, palaeoenvironment and organic geochemistry of the Cretaceous sequences of the Gongola Basin, Upper Benue Trough, Nigeria. Unpubl. Ph.D. Thesis, Abubakar Tafawa Balewa University, Bauchi, 315p.
2. Preliminary biostratigraphic evaluation of the hydrocarbon potentials of the Cenomanian–Turonian horizon in the Gongila Formation, Upper Benue Trough, Nigeria;Abubakar;J. Min. Geol.,2001
3. Palynology and age of the Kerri–Kerri Formation, Nigeria;Adegoke;Rev. Espan. Micropal.,1978
4. Découverte ďAptien supérieur à Albien inférieur daté par microfossiles dans la série détritique crétacée du fossé de la Bénoué;Allix;C. R. Acad. Sci.,1981
5. Early-late cretaceous (Aptian–Cenomanian) palynomorphs;Batten;J. Micropal.,1985