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. 2023 Jul 26;620(7974):600–606. doi: 10.1038/s41586-023-06350-8

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Extended Data Fig. 8 — a, Distribution of the standards (n = 52) average ⁸⁸Sr and ⁸⁷Sr/⁸⁶Sr values and SD used to bracket the individuals ⁸⁷Sr/⁸⁶Sr values. The accepted ⁸⁷Sr/⁸⁶Sr value of 0.71310 for SRM-1400 is indicated by the dashed red line (Supplementary Table 22). b, Distribution of the standards (n = 52) and samples (n = 57) average ⁸⁸Sr and ⁸⁷Sr/⁸⁶Sr values and SD (Supplementary Table 22). c, Distribution of the samples (n = 57) average ⁸⁸Sr and ⁸⁷Sr/⁸⁶Sr values and SD (Supplementary Table 22). d, ⁸⁷Sr/⁸⁶Sr profiles of all individuals analysed in this study (n = 57). Each curve is plotted as a function of the reconstructed dental age, according to the sampled tooth (M1 or M2; https://doi.org/10.5281/zenodo.7224898). e, Geological map of the area surrounding Gurgy, as reconstructed by BRGM (https://infoterre.brgm.fr), with environmental ⁸⁷Sr/⁸⁶Sr ratios from the IRHUM database (Willmes et al. 2013). ‘P’ stands for ‘plants’ and ‘S’ for ‘soil’.