In the past, relative dating methods often were the only ones available to paleoanthropologists.
As a result, it was difficult to chronologically compare fossils from different parts of the world.
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.
If not, then at least one of them must be physically out of context.
it had an ape-like jaw and was found in association with the bones of extinct animals, this "Piltdown Man" was also believed to be a very ancient human.
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.It was popularly referred to as "the missing link" in human evolution.In This was verified through the use of X-ray fluorescence examination.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.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.