ABSTRACT
To know the correct time sequence of the fossil remains of man and his ancestors is basic to interpreting their significance; but it is equally important from the point of view of understanding evolutionary process to obtain a measure of how much time separates one form from another. We are therefore concerned with two main classes of dating: Relative Dating the stratigraphical or archaeological age of
a specimen or formation. Chronometric Dating (generally called Absolute Dating): the age
of a specimen or formation measured in years.
