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For instance, if we find a fossil bone below the strata 3 rock level shown above, we assume that the animal most likely lived at a time before that layer was formed.
However, we must be careful to note whether or not the fossil comes from the mixed strata zone of the filled in hole..
We will never know whether he was really the perpetrator, but he is now the leading candidate.
Another candidate was a famous practical joker who lived near the Piltdown gravel deposit during the early 20th century.
Since these components contain nitrogen, there is a progressive loss of that element.
However, the assumption of contemporaneity may not always be correct.
This is due to the fact that one or both of the objects may have been moved or redeposited into a different location.
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.
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.