Recent excavations have revealed Early Formative platforms at the site of Paso de la Amada on the coast of Chiapas, Mexico. Platforms supported large, perishable structures up to 22 m long. These structures were not arranged in plaza groups or ceremonial precincts, but were scattered across the site. One of their functions may have been to control or integrate social units within the village, such as neighborhoods or lineages. It remains uncertain, however, whether these large buildings were residences for high-status families or public buildings shared by neighborhood members. From 1400 to 1250 B.C. a number of contemporary platforms probably served similar functions at the site, each in a separate segment of the community. Increasingly, however, these functions were centralized at a single large structure (Mound 6). This centralization persisted until 1100 B.C., when Mound 6 was abandoned and segmental social units emerged once again.