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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..

This relative dating method is based on the fact that there are specific progressive chemical changes in skeletal remains that result from burial underground.

That man was a medical doctor by training and therefore had the necessary skills to carry off the hoax.

He was Sir Arthur Conan Doyle, the author of the Sherlock Holmes detective stories.

(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.

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