Boncuklu Dawn: Early Çayönü Neolithic

The Boncuklu horizon sits like a dawn over the upper reaches of the Tigris basin, an early chapter in the larger Çayönü Pre‑Pottery Neolithic story. Archaeological layers at Boncuklu (Ergani, Diyarbakır) record occupations spanning roughly 10483–6269 BCE, capturing a transition from mobile Late Pleistocene lifeways to more settled, experimental village life. Excavations reveal rectangular and communal buildings, hearths, and early domestic assemblages that archaeological data indicate belong to a spectrum of Pre‑Pottery Neolithic traditions seen across southeastern Anatolia.

Material culture from Boncuklu—modestly decorated stone tools, early ground stone, and architectural traces—speaks to local innovation and regional interaction. Lithic typologies and construction techniques overlap with nearby Çayönü site phases, suggesting cultural continuity across sites rather than a sudden population replacement. Radiocarbon dates from occupational layers anchor a long chronology of human presence.

Genetically, the 13 sampled individuals provide a first window into the population that inhabited Boncuklu. While sample size remains modest, genome-wide patterns align with broader Anatolian Neolithic signatures seen elsewhere: a palette of ancestry components that later contribute to early farming populations in the Near East and, eventually, Europe. Limited evidence suggests local continuity with sporadic inputs from neighboring groups, but precise migration dynamics remain under investigation.

Genome-wide data from 13 individuals excavated at Boncuklu provide a cautiously illuminating genetic snapshot of an early Çayönü-related community. Mitochondrial haplogroups are dominated by lineages of haplogroup K (four individuals) with singular observations of K1a and T2g—maternal markers commonly found in Neolithic and later Near Eastern contexts. On the paternal side, Y‑DNA haplogroups recorded include single occurrences of J, G, and C. Because many haplogroup counts are singular (n=1), these specific Y‑lineage observations should be treated as preliminary indicators rather than definitive population frequencies.

Autosomal patterns from these samples generally align with a broader Anatolian Neolithic genetic profile documented across Pre‑Pottery and early Pottery Neolithic sites: a component consistent with early farmer ancestry that later contributes substantially to Neolithic Europe. The Boncuklu genomes suggest local continuity with regional Neolithic groups and limited admixture from neighboring populations, but low sample numbers for certain lineages restrict fine-scale demographic modeling.

Importantly, while mtDNA K appears recurrent in this assemblage, the small sample set (13 individuals) means that observed frequencies may not reflect the wider population. Ongoing sampling and high‑coverage genomes will be required to resolve kinship structures, sex-biased migration, and temporal genetic shifts within the Boncuklu community.