The so-called Piltdown man was once considered an unusual and perplexing human ancestor,but it turned out to be the jaw of a young orangutan attached to a Homo sapiens skull.What dating technique exposed the Piltdown fraud?

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Fluorine absorption analysis was used to determine that the jaw of the Piltdown man did not have the same fluorine levels as the surrounding fossils, suggesting that the jaw was not from a fossil of the same age as the skull. Further investigation revealed that the jaw belonged to an orangutan and had been artificially aged to give it the appearance of a human ancestor.

The So-Called Piltdown Man Was Once Considered an Unusual and Perplexing