According to recently adjusted chronology based on radiocarbon dating (cf. Rattray, 1991); predominant types are temporarily located in the epiclassical period, 650-950 CE, Coyotlatelco tradition (cf. Rattray, 1966), and are contemporaneous with the Tula Chico occupation (cf. Cobean, 1990), as well as other important settlements in the Valley of Mexico, as Cerro de la Estrella and Azcapotzalco (altepetl).
The Valley of Mexico, location of Lake Texcoco, was the home for several important cultures, including Cuicuilco, Teotihuacan, Tula (Toltec), and the Aztec capital of Tenochtitlan.