KUMARAN, K. N.; EDET, J. Palynostratigraphy of the late cretaceous Nkporo shale outcrop in the Anambra Basin, Nigeria. Journal of Palaeosciences, [S. l.], v. 42, n. 1-3, p. 372–379, 1993. DOI: 10.54991/jop.1993.1156. Disponível em: https://www.jpsonline.co.in/index.php/jop/article/view/1156. Acesso em: 5 may. 2024.