Abstract: Palynological analysis was carried on ditch cutting samples obtained from well ‘LW’ (6,730 - 8,990 ft.) located within the Greater Ughelli Depobelt of the Niger Delta Basin. Lithostratigraphic study revealed four main lithofacies (sandy shale, shale, siltstone and sand). Three informal palynological zones were established on the basis of First and Last downhole occurrences of palynomorph marker species. The paleoenvironment of deposition was inferred to be marginal marine with frequent freshwater incursion, while the age was also inferred to be early Miocene.