Abstract
Oxtankah was a Late Preclassic to Middle Postclassic (300 BCE–CE 1200) Prehispanic settlement at the southernmost end of the modern state of Quintana Roo, Mexico. This trans-shipment port associated with long distance trade was part of the political sphere of influence of the Kan dynasty of Dzibanche and Calakamul. Archaeological and biological evidence links its inhabitants with the central lowland region of Mexico and Guatemala. Residential mobility has been investigated through the analysis of strontium and oxygen isotopic ratios in the teeth of 18 individual of both sexes, commoners and elite, dated to the period of occupation. The results showed that 35.3% of the sample is outside the local strontium baseline, indicating that these individuals were possibly immigrants originating between the Peten, Palenque, and Guatemala, and from the northern Yucatan peninsula and Gulf of Mexico. Their relocation to Oxtankah is likely related to trading, familial ties, and changes of power in the Kan dynasty.
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