Fig. 3From: Palynomorph assemblage biozonation of Paleogene strata in Bende–Umuahia Area, Niger Delta Basin, southeastern NigeriaStratigraphic column of Niger Delta Basin and other coastal basins in Nigeria (according to Reyment 1965; Omatsola and Adegoke 1981; Salami 1983). E = Early; M = Middle; L = LateBack to article page