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. 2022 Jul 22;8(29):eabo6493. doi: 10.1126/sciadv.abo6493

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Fig. 2. — Stable isotope data, site name and age, and site coordinates are provided in data S1 and S2. (A) Pleistocene wolf stable isotope composition data by region. The Beringian and Siberian dataset (n = 66) includes two putative early dogs. The European dataset (n = 72) contains three putative early dogs. (B) Holocene Siberian dog and wolf stable isotope composition data. The sample includes isotope values for 144 dogs and 8 wolves. The colored symbols indicate the human subsistence economy types evidenced at the sites.