These processes result in All of these processes confuse the stratigraphic record.
Unfortunately, by 195 Piltdown Man Hoax--an explanation of one of the greatest frauds in the history of science This link takes you to an audio file at an external website.
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It had been cleverly carved to fit the skull and stained to look ancient.
In addition, the associated bones from extinct animals had much older fluorine and nitrogen ratios than either the jaw or the human skull.
It was popularly referred to as "the missing link" in human evolution.
In This was verified through the use of X-ray fluorescence examination.It contained tools and chemicals that could have been used to modify the ape jaw and human skull to give them the appearance of great antiquity.The owner of this kit was Martin Hinton, curator of zoology at the time of the hoax.In other words, they may no longer be in their primary context.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.At the same time, percolating ground water deposits trace amounts of fluorine and other elements, such as uranium, into the bone.