الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
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Abstract
The importance of micropalaeontology and palynology has grown with each decade since they were first employed in subsurface petroleum exploration, over 70 years ago (Bignot, 1985). today, the petroleum exploration companies, national geological surveys, geological consultancies and the universities to gether employ more scientists engaged in micropalaeontology than in all other aspects of palaeonotology combined. microfossils may vary in relative abundance because the various organisms flourished in different depositional environments.