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This study uses stable isotope analysis to identify the possible origin and taxon of unusually large worked bone artifacts recovered from the site of Chavín de Huántar in the central highland of Peru (3200-2200 BP). The site was traditionally considered to be an ideal trading point halfway between the Pacific coast and the Amazon jungle. The archaeological specimens were discovered in a workshop area located in the La Banda sector across from the main temple, and they were analyzed for the stable isotopes of carbon, nitrogen, sulfur, and oxygen. Results indicate that the worked bone artifacts are marine in origin and are likely from a cetacean or large pinniped. Their exotic origin and elaborate work have implications about ancient production practices and exchange, and they provide benchmark data and a comparative approach for future analysis of exotic bone artifacts.

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Chavín de Huántar is a Formative-period site (broadly 1500–200 B.C.) in the Peruvian Andes known for its highly complex art and monumental architecture. Recent excavations in the La Banda sector uncovered domestic settlements. The zooarchaeological analysis demonstrates that meat was locally produced and many bone tools were manufactured in this sector. These results contrast with previous faunal analysis from other parts of the site in which it was argued that dry camelid meat on the bone (ch’arki) was traded in exchange for local crops. The local economy of Chavín de Huántar was complex, showing different economic strategies across the site. While there is abundant evidence for the trade of lightweight exotic goods at the site (seashells, marine bone, obsidian, and cinnabar), the subsistence economy was locally focused.

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