The Late Preclassic to Classic period (400 B. C.-A. D. 900) Maya community of La Milpa, Belize, has recently revealed an ancient water and land-use system. As demonstrated at other southern Maya Lowland sites, the Maya created a microwatershed to store and convey water during the four months of seasonal drought. In addition to water conservation measures associated with reservoirs, deliberate channelization, diversion weirs, and postulated fields, the importance of rainy-season erosion control is indicated. Given the ancient population densities identified in the Maya area, coupled with the seasonal scarcity of water, we posit a “skill-oriented” economy.

Completed excavations at this important Preclassic Maya site have produced 350 m2 of Middle Preclassic (1200-400 B. C.) deposits dug to bedrock; a continuous section 47 m long through the Preclassic deposits documents the architectural history of the site. Nine more Middle Preclassic burials, the remains of earth- and plaster-floored houses with associated yard surfaces, and a chultun chamber containing well-preserved plant remains document economic and ritual behavior in the Swasey and Bladen phases (1200-650 B. C.).

Based on the results of 267 replication experiments with obsidian, chalcedony, and agate tools conducted with a range of working materials, I have classified use-wear patterns using Keeley's high-resolution approach to establish a framework for interpretation of stone-tool use. This paper describes the results of microwear analysis of two assemblages of lithic artifacts from the late Late Classic period (A. D. 763-850) at Copán, western Honduras, and shows how the use-wear data can be interpreted within the archaeological contexts and help to investigate how ancient complex societies functioned as well as how and why they changed. Microwear analysis of chipped-stone artifacts collected in front of Structure 10L-16 and artifacts from Structure 10L-22A show clear differences between the two assemblages. In accordance with the archaeological, epigraphic, and iconographic evidence, the low use-intensity of chipped stone from the first structure could have originated from special use such as ritual, production of marine shell ornaments, etc., during the reign of Yax Pac. Marine shell craft production may have been carried out by members of the royal family or attached specialists serving the ruler. The relatively high use-intensity observable in the second assemblage may reinforce the hypothesis that the building was a Classic Maya popol na (council house) in which feasts or banquets were prepared. If this was the case, use-wear data might support epigraphic and iconographic evidence that suggests the weakening and eventual demise of centralized political authority at Copán in the ninth century.

Artificial cranial deformation is a recognized attribute of many archaeologically recovered Andean skeletal collections. Ethnohistoric sources document the diversity of forms used to mark both vertical and horizontal status distinctions among Late Horizon peoples. Region-specific social groups were characterized by distinctive deformation styles, as were individuals of Inka heritage. Review of early Spanish accounts and consideration of various strategies commonly used in analyzing deformation forms suggest that investigators be sensitive to both final skull shape and the nature of deforming devices. This case study maintains that detailed descriptions of skull form will permit interpretations of technique and apparatus used, without the actual deforming artifacts. We examined archaeologically recovered skeletal remains from Huaracane-phase, Tiwanaku-related Chen Chen-phase (Tiwanaku V), and Tumilaca-phase cemetery components of the Omo site group, located near the present-day town of Moquegua in southern Peru. Our analysis demonstrates that the pattern of cranial deformation within the Omo M10 cemetery complex clearly emphasizes homogeneity within individual cemeteries and heterogeneity across cemeteries. We enlist current competing models for Tiwanaku hegemony to interpret this pattern.

The concept of dualism has become a major theme in archaeological, ethnohistoric, and ethnographic studies of native South American societies. This article reviews use of the concept by archaeologists and ethnohistorians in the Andes, and considers an ethnohistoric and archaeological case from the Nepeña Valley of the Peruvian North Coast. The review shows that various ideas have been described by the terms “dualism” or “dual organization,” and that archaeologists have interpreted paired sets of remains as the material expressions of dualism. The Nepeña Valley data document a paradoxical case in which the power of local lords, who shared rule, was based on dual organizations, and yet the settlement pattern is clearly hierarchical. This suggests that although dual principles may have formed the social syntax of authority, political power—particularly access to labor—was asymmetric, suggesting, in turn, the need to reconsider the relationship between material remains and complex social principles such as dualism in archaeological approaches to prehistoric social and political organizations.