Multi-proxy evidence from the exposed strata at Okpekpe, Imiegba, and environs for nomenclature as Mamu Formation, Benin Flank, NW Anambra basin, Nigeria. Journal of the Nigerian Society of Physical Sciences, [S. l.], v. 8, n. 1, p. 2604, 2026. DOI: 10.46481/jnsps.2026.2604. Disponível em: https://journal.nsps.org.ng/index.php/jnsps/article/view/2604. Acesso em: 4 mar. 2026.