Biostratigraphy,Paleoenviroment and Sequence Stratigraphy ; Case study from Nigeria, is an in-depth research directed towards exploration and environmental degradational and impact of exploitation. The goal is to understand the past, the present and the future behaviour of the whole earth system. On this basis,the interdisciplinary "High impact Biostratigraphic approach" has been applied to this research work.This has resulted in the development of geologic concepts and methods in Sequence Stratigrapic analysis causing significant changes in Stratigraphic work.This work has documented the application of high impact biostratigraphic approach in the Mamu Formation of the Anambra Basin, Nigeria.