El Soco Ceramic-Age Islanders

Archaeological data indicates that the Ceramic-period communities of Hispaniola — including those represented at El Soco — were part of a wider expansion of Arawakan-speaking peoples across the Caribbean. Radiocarbon-calibrated contexts at sites like El Soco place occupation and material change firmly within 850–1450 CE, a centuries-long horizon of settled villages, sophisticated pottery production, and intensified coastal foraging.

Pottery styles from El Soco display the hallmarks of the Ceramic Age: thin-walled, coil-built vessels, decorative punctates, and closed forms used for cooking and storage. These objects are not merely household wares but markers of identity and exchange — stylistic links tie El Soco to other sites on Hispaniola and nearby islands, suggesting networks of trade and shared cultural vocabulary.

Limited evidence suggests that such communities combined horticulture (root crops and possibly maize) with marine resources, exploiting reefs and estuaries. While the archaeological record at El Soco provides a vivid material culture, genetic data are essential to test questions of migration and continuity: did the people who made these pots descend from earlier Archaic populations, or do they represent later arrivals? The combined archaeological and genetic lens offers a way to move beyond pottery typologies to human stories of movement and persistence.

Thirteen ancient individuals from El Soco were analyzed for uniparental markers, offering a direct window into ancestry. The Y-chromosome is dominated by haplogroup Q in 9 of 13 males — a pattern consistent with Indigenous paternal lineages widely found across the Americas. On the maternal side, mitochondrial DNA is primarily haplogroup C (7 individuals), with additional D1 (3), B2 (2), and a single A2z — all lineages characteristic of Native American populations.

Together, these results indicate strong Indigenous genetic continuity within this Ceramic-period community. Archaeological interpretations that posit local development or regional migration can be tested against this genetic signal: the prevalence of Indigenous haplogroups supports continuity with pre-contact populations rather than wholesale replacement by an external group during the dated interval.

Caveats remain. A sample of 13 individuals provides moderate resolution; while patterns are compelling, they do not capture the full demographic complexity of Hispaniola across six centuries. Sex-biased processes (for example, patrilocal residence or differential mobility) could shape the uniparental record; genome-wide data would further resolve ancestry proportions, gene flow, and relationships to contemporaneous Caribbean and mainland Arawakan groups. Archaeogenetics and archaeology together create a richer, more testable narrative of who lived at El Soco and how they connected across the Caribbean.