Relative dating methods in archaeology
When the bones of our early ancestors are found in the same geological strata as those of other animals that are known to have lived only during a specific time period in the past, we assume that these ancestors must also have come from that time.This is referred to as dating by association with they underwent relatively rapid evolutionary changes that are identifiable in their teeth and other skeletal parts.However, we must be careful to note whether or not the fossil comes from the mixed strata zone of the filled in hole..However, the assumption of contemporaneity may not always be correct.
It was popularly referred to as "the missing link" in human evolution.
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In the past, relative dating methods often were the only ones available to paleoanthropologists.
Fluorine analysis is primarily used for verifying whether or not two fossils in the same strata at a site were in fact contemporaneous.
If not, then at least one of them must be physically out of context.