This web site serves as an introduction to the science of biostratigraphy. This science draws on other fields such as evolution and paleontology to formulate its conclusions. Biostratigraphy witnessed a rapid expansion in the late 20th century. This growth was attributed to its ability to accurately predict the locations and sizes of coal and petroleum reserves and reservoirs. In essence, advancements in micropaleontology led to the introduction of biostratigraphy into the world of oil and gas exploration. The applications of biostratigraphy are often being replaced by technological innovations which offer quicker and cheaper results (Reyment 1980).

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