Transbaikal Mesolithic Echoes

The Transbaikal Mesolithic occupation sits at the edge of Siberia's great forest‑steppe mosaic. Radiocarbon-calibrated material associated with three human remains from Zhindo and Pad' Tokui date to the early Holocene (approximately 6396–5726 BCE). Archaeological data indicates seasonal camps positioned to exploit riverine and forest resources after the Last Glacial Maximum.

Paleoenvironmental shifts — warming, advancing forests, and new wetlands — opened rich ecological niches. These landscapes encouraged mobile hunter–gatherer groups who practiced broad-spectrum foraging: river fish, large and small game, and wild plant foods. The material footprint is light but consistent with open-air, ephemeral settlements: hearth features, concentrations of stone artifacts, and faunal fragments have been reported in the Transbaikal region, suggesting repeated short-term occupations rather than long-lived villages.

Limited evidence suggests cultural continuity with broader Transbaikal Mesolithic traditions, yet the small sample size requires caution. Genetic data (see Genetics section) begins to fill population-level questions by indicating affinities with northern and eastern Eurasian lineages. Taken together, the archaeological and genetic signals portray a resilient, mobile people adapting to dynamic postglacial environments.

Three ancient individuals sampled from Zhindo and Pad' Tokui provide a narrow but valuable genetic window into Transbaikal Mesolithic people. Y‑chromosome analysis shows haplogroup N in two of the three males sampled. Haplogroup N today has a broad distribution across northern Eurasia and is often associated with populations in northeastern Europe and Siberia; its presence here suggests deep regional continuity of at least some paternal lineages.

Mitochondrial DNA from the three individuals falls into haplogroups C (two individuals) and F (one individual). Haplogroup C is widespread among ancient and modern populations of northern and eastern Eurasia and is commonly observed in hunter‑gatherer contexts; haplogroup F has a more southern/eastern distribution but is also present in Siberian populations. These maternal markers point to east‑Eurasian affinities and possible gene flow along north–south ecological corridors.

Crucially, sample count is very small (n=3). Any population‑level inference must be treated as provisional. The pattern of Y‑N combined with mtDNA C/F hints at demographic continuity with wider Siberian hunter‑gatherer ancestries and potential sex‑biased processes (e.g., localized patrilines), but further sampling is needed to test these hypotheses. Archaeogenomic comparisons with larger Mesolithic and later Neolithic datasets will clarify whether these signals represent local persistence, migration, or admixture.