In 1950 it was shown by the fluorine method of relative dating that the Piltdown mandible and cranial bones were considerably younger geologically than the Lower and Middle Pleistocene fossils said to have been found at the same site.<ref>http://www.clarku.edu/~piltdown/map_expose/radioactivedating_piltdown.html</ref> It is still not conclusively known who was behind the forgery. | In 1950 it was shown by the fluorine method of relative dating that the Piltdown mandible and cranial bones were considerably younger geologically than the Lower and Middle Pleistocene fossils said to have been found at the same site.<ref>http://www.clarku.edu/~piltdown/map_expose/radioactivedating_piltdown.html</ref> It is still not conclusively known who was behind the forgery. |