The sites of Contlalco and La Coquera in the valley of Tlapa were excavated in 2004 by the PI. Both date from the Middle to Late Formative periods (750 BC-AD 200). Excavations there also suggested that earlier periods of occupations in the narrow valleys of the Balsas River are either Read more…
Sociopolitical complexity developed in Mesoamerica beginning in the initial Early Formative period (1700-1200 BC) with the transition from egalitarian communities to ranked societies, although there are also disagreements as to causes, processes, place, and timing of the archaeological correlates associated to this emergence. The emergence, geographic spread, timing, meaning and Read more…
Defining the pre-Olmec people of Guerrero is a difficult task since relatively little is known about them. While the Olmec mural of Cauadziziqui provides the Formative period ceiling, the pre-Olmec mural may date any time before that, although a Paleo-Indian date for the mural seems unlikely.