A mid-sixteenth-century cemetery was investigated at the colonial Mixtec site of Teposcolula Yucundaa and is shown to be related to the cocoliztli pandemic of 1544–1550. This is the earliest colonial epidemic cemetery to be identified in Mexico. Through archaeogenetic and oxygen stable isotope analysis it is demonstrated that the interred individuals were local Mixtecs, and mortuary analysis sheds light on both Christian and traditional religious practices at the site. Mitochondrial haplogroup frequencies support long-term genetic continuity in the region, and carbon stable isotopes of bone collagen and enamel carbonates suggest no decrease in maize consumption during the early colonial period, despite historical evidence for a changing agricultural economy and increased wheat production at the site. The Teposcolula cemetery provides a rich and complex perspective on early colonial life in the Mixteca Alta and reaffirms the importance of archaeological and bioarchaeological evidence in investigating complex social and biological processes of the past.

This study examines the relationship between agricultural intensification and social complexity in past societies using a diachronic, contextualized population, the Nasca of the southern coast of Peru (A.D. 1–750). Using stable isotope analysis of human bone collagen, we tested social assumptions arising from the relationship between agricultural intensification and social complexity during the Nasca’s cultural fluorescence, including the construction of underground filtration galleries (puquios). Our data show that while agricultural intensification may have spurred social complexity in the Nasca region, it engendered few significant differences in access to foodstuffs. High status individuals in Nasca society had access to more meat than low status individuals, especially during time periods characterized by more social conflict, increasing trade routes, and agricultural intensification. Meat consumption may have been an important marker of status identity among the Nasca. Nasca elites, however, did not control access to agricultural products such as maize as effectively as they did meat. These dietary data support the contention that an indigenous process of innovation and intensification was the major catalyst to later social complexity in the Nasca population from the Las Trancas Valley.

This article presents an archaeobotanical analysis from the site of San Carlos, a small Early/Middle Formative period homestead situated in the Coatzacoalcos River basin in the southern Veracruz lowlands, approximately 9 km southeast of San Lorenzo. Although archaeobotanical data from the Olmec heartland have become more widely reported in recent years, we still lack sufficient data to capture regional and temporal variation in plant foodways. Thus, we report the macrobotanical data from San Carlos and provide a quantitative comparison with existing data sets from other southern Veracruz sites with Early and Middle Formative components (La Joya and Tres Zapotes). Comparative analysis reveals that these three sites vary dramatically in terms of the ubiquity and abundance of maize, in addition to the frequencies of different fruit types. We interpret these differences in terms of (1) settlement location with respect to geographical positioning in terms of access to riverine wetlands and their resources and (2) their association with areas of developing sociopolitical power structures.

Lagoa Santa, a karstic area in eastern Central Brazil, has been subject to research on human paleontology and archaeology for 175 years. Almost 300 Paleoindian human skeletons have been found since Danish naturalist Peter Lund’s pioneering work. Even so, some critical issues such as the role of rockshelters in settlement systems, and the possible paleoclimatic implications of the peopling of the region have yet to be addressed. We present some results obtained from recent excavations at four rockshelters and two open-air sites, new dates for human Paleoindian skeletons, and a model to explain the cultural patterns observed so far. It is also argued that the Paleoindian subsistence system at Lagoa Santa was similar to other locations in South America: generalized small-game hunting complemented by fruits, seed, and root gathering.

El objetivo de este trabajo consiste en el análisis de la evidencia arqueológica de las Sierras Centrales de Argentina correspondiente al período que abarca desde la Transición Pleistoceno-Holoceno (11,000 – 9000 a.P.) hasta fines del Holoceno Temprano (ca. 6000 a.P.) y sus implicancias para el conocimiento del proceso de poblamiento inicial de este sector de Argentina. Proponemos la existencia de una presencia humana poco intensa y discontinua durante la Transición Pleistoceno-Holoceno y que la intensidad de la ocupación aumenta notablemente con posterioridad a ca. 8000 a.P. Las evidencias sugieren que desde la llegada de los primeros grupos a las Sierras Centrales ca. 11,000 a.P. hasta el logro de la colonización efectiva del área (sensu Borrero 1989-1990) ocurrida a partir de ca. 8000 a.P., se produjo un proceso de exploración caracterizado por muy bajas densidades poblacionales que bien pudo incluir colonizaciones fallidas. Estas conclusiones alertan sobre el empleo de modelos de poblamiento que asuman continuidad biológica-cultural durante todo el Holoceno.

Geometric earthworks located in the interfluvial zone of the Upper Purús and Madeira river tributaries in the southwestern Amazon are formed by ditches of varying shapes and sizes along with contiguous exterior embankments and roads terraced with low backfill banks. The earthworks in the Brazilian state of Acre were used from 1200 B.C. to the fourteenth century A.D., indicating a continuous, collective cultural institution, a generalized regional phenomenon characterized by local variants and alterations and probably not exclusively restricted to a specified ethnic group. The carefully planned position of the earthworks in the landscape and the recurring geometric forms represented in this earthwork architecture suggest functions that were part of a tradition of shared ideology related to rituals and/or the sociopolitical activities of ancient Amazonian peoples. Recent archaeological fieldwork on two composite earthwork sites, Fazenda Atlântica and Quinauá, situated in the core location of the geometric earthworks, provides further evidence for the predominantly ceremonial use of these constructions.

An artificial structure was discovered under a natural skylight inside Grutas de Tzinacamóztoc, in the vicinity of the archaeological site of Cantona. The structure is made up of piled rocks, defining a pentagonal enclosure with a central mound. Detailed measurements and computer modeling allowed tracing of the sunbeam path projected on the structure and on the cave floor, particularly for dates of astronomical and/or Mesoamerican calendrical importance. This corroborates the possible prehispanic use of this site as a complex and sophisticated gnomon.