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Continuing isotopic investigation of the sacrificial burials and trophies beneath the Feathered Serpent Pyramid (Temple of Quetzalcoatl) in ancient Teotihuacan, Mexico, has produced new results. Isotopic proveniencing using bioapatite strontium and structural carbonate oxygen isotopes in tooth enamel was applied to 39 samples, 24 from the sacrificial victims and 15 from the trophy jaws. Both the strontium and oxygen isotope ratios suggest that most or all of the sacrificial victims came from the central highlands of Mexico, which includes the area of Teotihuacan. In this sense, we find somewhat less multiethnicity represented among the military at Teotihuacan than previously thought. Analysis of carbon isotope ratios in enamel structural carbonate indicated a childhood diet dominated by maize, relatively homogeneous among the victims at the pyramid, and typical for much of pre-Hispanic Mesoamerica. [ABSTRACT FROM AUTHOR]

In AD 2000, construction activities in the central plaza of the city of Campeche, Mexico, led to the discovery of an early colonial church and an associated burial ground dating from the sixteenth and seventeenth centuries AD. During the subsequent rescue excavations, the remains of at least 180 individuals were unearthed fromthe churchyard. We have concluded a series of isotopic studies of these remains to obtain information on diet, status, place of origin, and date of burial. This work involves the application of both light and heavy isotope analyses to both tooth enamel and human bone. Carbon and oxygen isotope ratios were measured in tooth enamel and bone. Carbon and nitrogen isotope ratios were measured on bone collagen. Strontium and lead isotopes were measured in tooth enamel, and the ratios were compared to a large database for the Maya region. Radiocarbon dates were obtained for 10 of the skeletons to evaluate the date of burial and the period of use of the cemetery. The results of our study, interpreted jointly with mortuary information and conventional skeletal examination, provide detailed information on the overall burial population, a sort of collective life history of the deceased individuals. In the context of the historical background, new insights on living conditions, mobility, and diet of the founding generations in the colonial New World are obtained. A new and direct appreciation on life and death in an early multiethnic colonial Spanish town, including its historically invisible sectors-children, women, servants, and slaves-becomes possible. [ABSTRACT FROM AUTHOR]

Following a brief introduction to mortuary practices in Prehispanic Maya society, we outline the analytical procedures followed during the excavation and laboratory investigation of five burial assemblages from the Late Classic period site of Xuenkal, Yucatan, Mexico. A detailed account of a sequence of primary and secondary interments is provided with a focus on taphonomic and biovital information, emphasizing the importance of an interdisciplinary approach, especially human taphonomy, for the reconstruction of complex Maya mortuary treatments. Our results show that bodies of the dead or their parts followed surprisingly long and complex funerary paths. [ABSTRACT FROM AUTHOR]

The 2005 articles by Stoitman et al. and Flannery et al. to which Neff et al. (this issue) have responded are not an indict- ment of instrumental neutron activation analysis (JNAA) but, rather, of the way Blomster et al. (2005) misuse it and of the hyperbolic culture-historical claims they have made from their !NAA results. It has long been acknowledged that INAA leads not to sources but to chemical composition groups. Based on composition groups derived from an extremely unsystematic collection of sherds from only seven localities, Blomster et al. claim that the Olmec received no carved gray or kaolin white pottery from other regions; they also claim that neighboring valleys in the Mexican highlands did not exchange such pottery with each other. Not only can one not leap directly from the elements in potsherds to such sweeping culture-historical conclusions, it is also the case that other lines of evidence (including petrographic analysis) have for 40+ years produced empirical evidence to the contrary. In the end, it was their commitment to an unfalsifiable model of Olmec superiority that led Blomster et al. to bypass the logic of archaeological inference. [ABSTRACT FROM AUTHOR]

Objectives: The ancient city of Chichén Itzá in the northern Yucatán of Mexico was one of the most important in the Maya area, but its origins and history are poorly understood. A major question concerns the origins of the peoples who founded and later expanded the ancient city. Hundreds of people were ritually executed and their bodies thrown into the waters of the Sacred Cenote at Chichén., Materials and Methods: In this study, we use strontium and oxygen isotopes to study the place of origin of a large sample of these individuals. Isotopes are deposited in human tooth enamel. Enamel forms during the first years of life, remains largely unchanged long past death, and can provide a signature of the place of birth. If the isotope ratios in enamel are different from the place of death, the individual must have moved during his/her lifetime., Results: Comparison of our results from the cenote with information on isotope ratios across the Maya region and elsewhere suggests that the individuals in the cenote came from a number of different parts of Mexico and possibly beyond., Discussion: It is not known if all of the sacrificial victims resided in Chichén Itzá, but their suggested origins likely reflect patterns of population movement and social networks that existed between Chichén Itzá and both neighboring and distant regions. Various lines of evidence point to places in the Yucatán, along the Gulf Coast, Central America, or even in the Central Highlands of Mexico., (© 2019 Wiley Periodicals, Inc.)

Objectives: This article aims to infer population dynamics in the Noh Bec region (Yucatán Peninsula, México) during the Maya Classic period (AD 350-800), based on a combined analysis of dental morphology and (87) Sr/(86) Sr isotopes, and on a comparison of the dental evidence together with archaeological signs of trade and relationships with other regions in the Maya world., Methods: Twenty-three dental morphological variables were used to estimate affinities between dental collections from Noh Bec and 10 more sites from the region. (87) Sr/(86) Sr isotopes were recorded from the enamel of permanent teeth of 32 individuals from Noh Bec, and compared to the site's local chemical signature., Results: Dental morphology reveals a strong affinity with Kohunlich, in the central Maya lowlands, while some diversity can be noted with the Petén sites (such as Calakmul) as well as sites on the northern coast of the peninsula. The local extent of (87) Sr/(86) Sr variation ranges between 0.7086 and 0.7088. Eight of the 32 Noh Bec individuals analyzed were born elsewhere. Isotopic values indicate different places of origin although apparently none were from the northern coast of the peninsula; instead, the range of variability reflects many locations along the western coast of the peninsula as well as inland sites in the Chenes region in Campeche., Conclusions: Dental morphology and (87) Sr/(86) Sr ratios indicate intense population dynamics in the peninsula during the Maya Classic period. Despite the different nature of the dental and isotopic indicators, results agree with archaeological evidence and with proposed trade routes in the peninsula., (© 2015 Wiley Periodicals, Inc.)

Construction activities around Campeche's central park led to the discovery of an early colonial church and an associated burial ground, in use from the mid-16th century AD to the late 17th century. Remains of some individuals revealed dental mutilations characteristic of West Africa. Analyses of strontium isotopes of dental enamel from these individuals yielded unusually high (87)Sr/(86)Sr ratios, inconsistent with an origin in Mesoamerica, but consistent with an origin in West Africa in terrain underlain by the West Africa Craton, perhaps near the port of Elmina, a principal source of slaves for the New World during the 16th century. These individuals likely represent some of the earliest representatives of the African Diaspora in the Americas.