Ancient civilizations-2

Early hunters (to 6500 bce)

The time of the first peopling of Mesoamerica remains a puzzle, as it does for that of the New World in general. Until recently it was widely accepted that groups of peoples entered the hemisphere from northeastern Siberia, perhaps by a land bridge that then existed, at some time in the Late Pleistocene, or Ice Age. But radiocarbon dating and other relatively recent tools have complicated the story. Perhaps they entered the West Coast from the sea at multiple points. There is abundant evidence that, at least by 11,000 bce, hunting peoples had occupied most of the New World south of the glacial ice cap covering northern North America. These peoples hunted such large grazing mammals as mammoth, mastodon, horse, and camel, armed with spears to which were attached finely made, bifacially chipped points of stone. Finds in Mesoamerica, however, confirm the existence of a “prebifacial-point horizon,” a stage known to have existed elsewhere in the Americas, and suggest that it is of very great age. In 1967 archaeologists working at the site of Tlapacoya, southeast of Mexico City, uncovered a well-made blade of obsidian associated with a radiocarbon date of about 21,000 bce. Near Puebla, Mexico, excavations in the Valsequillo region revealed cultural remains of human groups that were hunting mammoth and other extinct animals, along with unifacially worked points, scrapers, perforators, burins, and knives. A date of about 21,800 bce has been suggested for the Valsequillo finds.

More substantial information on Late Pleistocene occupations of Mesoamerica comes from excavations near Tepexpan, northeast of Mexico City. The excavated skeletons of two mammoths showed that these beasts had been killed with spears fitted with lancelike stone points and had been butchered on the spot. A possible date of about 8000 bce has been suggested for the two mammoth kills. In the same geologic layer as the slaughtered mammoths was found a human skeleton; this Tepexpan “man” has been shown to be female and rather a typical American Indian of modern form. While the association with the mammoths was first questioned, fluorine tests have proved them to be contemporary.

The environment of these earliest Mesoamericans was quite different from that existing today, for volcanoes were then extremely active, covering thousands of square miles with ashes. Temperatures were substantially lower, and local glaciers formed on the highest peaks. Conditions were ideal for the large herds of grazing mammals that roamed Mesoamerica, especially in the highland valleys, much of which consisted of cool, wet grasslands not unlike the plains of the northern United States. All of this changed around 7000 bce, when worldwide temperatures rose and the great ice sheets of northern latitudes began their final retreat. This brought to an end the successful hunting way of life that had been followed by Mesoamericans, although humans probably also played a role in bringing about the extinction of the large game animals.