POLLEN DIAGRAM FROM
Historical or archaeological evidence can also be important in dating non-documentary records such as pollen diagrams. In the case of one core from southwest Syria, the presence of an exotic pollen type, that of maize (Zea mays), helped show that the upper part of the core dated to recent centuries and not to the early Holocene as had previously been proposed (Bottema, 1977). Maize is a native to the Americas and was only introduced into the Old World as a crop after the Spanish conquest of Mexico in the sixteenth century.
Golden Age Project Comment - Conventional archaeology could not accept the Bottema evidence that maize pollen was found at this location as early as 7500 BC. However, this imminent professional can now be shown to have been correct.