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 ...