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Wide occurrence of Pre-Cambrian sedimentary formations, regional association of commercial oil-gas deposits and oil-shows let to consider Upper Proterozoic deposits of ancient platforms as promising object in respect of oil-gas content itself and as a source of oil in Paleozoic as well. Commercial oil-gas bearing established in South Oman, China and mainly Siberian Platform with main oilbering regions Nepsko-Botuobinsk and Bajkits anticlines. Small oil deposits were discovered in the East-European platform in Vendian and Riphean deposits.