Did you read the quote Kent, the Yaquis lived up to and around the Gila river in 552AD, the paper said nothing of the Gilas, it stated Yaquis, maybe a quick review of the quote.
The Yaquis were well accustomed to the many parts of North America. By 552 AD, Yaquis were living in family groups along the Yaqui River (Yoem Vatwe) north to the Gila River, where they gathered wild desert foods, hunted game and cultivated corn, beans, and squash. Yaquis traded native foods, furs, shells, salt, and other goods with many indigenous groups of central North America. Among these groups are the Shoshone, the Comanche, the Pueblos, the Pimas, the Aztecs, and the Toltec. Yaquis roamed extensively in pre-Columbian times and sometimes settled among other native groups like the Zunis
