The first thing to do in any area is to have a standard of correlation - a well made type section determined. Forams carefully identified make for safe age determination. This can be done not only in a general way but even down to some cases to foot. The species must be well known and cut of the outside into as well the inside. He had what looked like one species other broken down layer by layer revealed not less than 6 species. For oil workers it is not essential that they know the literature or the names of the forms, only that the species are definitely known and then always referred to by some gontrol. Correlations of forams are usually more valuable than single species in correlations. Forams are very sensitive to ecological conditions. Pelagic forms come in with