Tlatilco was a large pre-Columbian village in the Valley of Mexico situated near the modern-day town of the same name in the Mexican Federal District. It was one of the first chiefdom centers to arise in the Valley, flourishing on the western shore of Lake Texcoco during the Middle Pre-Classic period, between the years of 1200 B.C.E. and 200 B.C.E.. It gives its name to the "Tlatilco culture", which also included the town of Tlapacoya, on the eastern shore of Lake Chalco.
Tlatilco is noted in particular for its high quality pottery pieces, many featuring Olmec iconography, and its figurines, including Olmec-style baby-face figurines. Much else, however, seems to be in a native ceramic tradition. These Olmec-style artifacts have been led to speculation concerning the nature of Olmec influence on other Mesoamerican cultures.
The Tlatilco site was used in modern times as a source of clay for brick-making. By the 1930s, many of the ancient artifacts thereby uncovered made their way into the hands of collectors, including Miguel Covarrubias, artist and ethnographer. Covarrubias led the first controlled excavation in 1942. By 1949, over 200 burials were identified at Tlatilco, leading to its categorisation as a necropolis. Two major archaeological excavations followed, with over 500 burials eventually identified, many with intact grave offerings. The last field season also undertook a systematic survey of non-burial structures, leading to the realization that these hundreds of burials were apparently located under ancient houses, although no traces of them remain, as well as among the various trash pits, and that Tlatilco was not a necropolis, but rather a major chiefdom center. Many burials, primarily of high status individuals, show evidence of dental mutilation and artificial cranial deformation, most probably through the use of cradleboards.
The Tlatilcans' agriculture was focused on maize, but also included beans, amaranth, and squash, and chili peppers. These plants were supplemented with various fowl, including migratory birds, wild rabbits and other smaller mammals, and deer and antelope. Tlatilco reached its heydey during the period from 1000-700 B.C.E., during the Olmec horizon. The following Zacatenco phase (700-400 B.C.E.) saw a cessation of the use of Olmec iconography and forms.
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