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In other words, the biochemical clock that this method relies on runs at a different rate in different environments.
Fluorine analysis is primarily used for verifying whether or not two fossils in the same strata at a site were in fact contemporaneous.
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.The skull and jaw clearly were not from the same time period.The jaw was likely to have come from a modern young adult orangutan.(length = 7 mins, 24 secs) The perpetrator of the Piltdown Man hoax may have been uncovered.In the mid 1990's, an old tool kit was found in a dusty backroom of the Natural History Museum in London.