However, relative methods are , which is that if there are layers of deposits, those laid down first will be on the bottom and those laid down last will be on the top. However, geological strata are not always found to be in a neat chronological order.

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.

In other words, the biochemical clock that this method relies on runs at a different rate in different environments.

Fluorine analysis is primarily used for verifying whether or not two fossils in the same strata at a site were in fact contemporaneous.

In 1912 Charles Dawson discovered the first of two skulls found in the Piltdown quarry in Sussex, England, skulls of an apparently primitive hominid, an ancestor of man.

- Piltdown man is one of the most famous frauds in the history of science.can be used to tell us whether or not the animals they were from actually lived at about the same time.This relative dating method is based on the fact that there are specific progressive chemical changes in skeletal remains that result from burial underground.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.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.