Acritarch Biostratigraphy

The Paleontographica Indica Number –5 covers detailed acritarch studies on the Mesoproterozoic and lower Paleozoic sediments, informally referred to as the pre-unconformity or pre-tertiary sequence, occurring in the sub-surface of Ganga Basin between Bundelkand Granitic Complex (BGC) and Neogene Siwalik sediments. Diversified acritarch assemblages of Mesoproterozoic and lower Paleozoic are documented from the pre-unconformity sequence and species with age markers are described systematically through illustrations. An acritarch zonation scheme is outlined for Mesoproterozoic and lower Paleozoic sediments with intra-basinal correlation. Besides, an account on the revised lithostratigraphic classification of Pre-unconformity sequence is detailed.