Coastal Fujian: Late Neolithic Shores

Along the bending mouth of the Min River, communities clustered at Tanshishan and nearby Xitoucun during the Late Neolithic (c. 2850–2200 BCE), carving lifeways from tidal marshes and riverine plains. Archaeological data indicates shell middens, coastal dwellings, and pottery traditions adapted to a maritime-edge environment. Excavations at Tanshishan reveal stratified deposits that suggest sustained occupation through several centuries in which people combined foraging, fishing, and incipient rice cultivation.

Culturally, these sites sit within the broader Late Neolithic of southeast China, a dynamic horizon of localized pottery styles, polished stone tools, and emergent social differentiation. Limited evidence suggests exchanges with upriver and offshore groups; marine resources and riverine trade likely structured settlement choices. Material traces—shoreline middens, hearth features, and curvilinear dwelling post-holes—paint a picture of resilient coastal lifeways facing seasonal tides and monsoon rhythms.

From a temporal perspective, the 2850–2200 BCE window captures a phase of regional consolidation before later Bronze Age transformations. Archaeological data indicates that these Fujian communities were neither isolated nor static: they were part of a pulse of demographic, economic, and cultural interaction along China’s southeastern littoral.

The genetic portrait from 11 individuals associated with China_SEastAsia_Coastal_LN (2850–2200 BCE) is modest but informative. Y-chromosome data shows a predominance of haplogroup O (4/11), with single instances of NO, K, and F. Haplogroup O is widely associated with later East Asian male lineages and is often prominent in populations across mainland China and Southeast Asia; its presence here aligns with regional continuity of paternal ancestries.

The detection of NO, K, and F—older branching lineages—hints at deeper and possibly heterogeneous paternal ancestries along the coast. NO can reflect connections toward northern East Asia, while K and F are macro-haplogroups whose derived lineages dispersed broadly across Eurasia and Oceania; their presence in single individuals suggests limited diversity or isolated lineages within the community. Mitochondrial (maternal) haplogroups are not consistently reported across these 11 samples, so maternal genetic patterns remain unclear and should be treated cautiously.

Genomic comparisons with other Late Neolithic and later populations suggest continuity of East Asian ancestry components in coastal Fujian, potentially contributing to lineages involved in later coastal migrations. However, with only 11 samples the conclusions are preliminary: the dataset is too small to resolve fine-scale demographic events such as sex-biased migration, admixture pulses, or precise affinities with Austronesian-related groups. Archaeogenetic analysis therefore complements—but does not yet replace—the archaeological narrative.