JBT009 - A man buried in Brazil in the Shell Mound era

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Portrait reconstruction of A man buried in Brazil in the Shell Mound era
Ancient Individual

A man buried in Brazil in the Shell Mound era

A man buried in Brazil during the Sambaqui Culture of Jabuticabeira II

A fragment of the ancient world, preserved across millennia in strands of DNA.

JBT009
455 BCE - 183 BCE
Male
Brazil
Scroll to begin
Chapter I

Identity

The biological and cultural markers that define this ancient individual

Sample ID

JBT009

Date Range

455 BCE - 183 BCE

Cultural Period

Sambaqui Culture of Jabuticabeira II

Biological Sex

Male

mtDNA Haplogroup

C1c

Y-DNA Haplogroup

Q-M3

Social Role

Fisher (AI estimate, era-typical)

Chapter II

Place

Where this individual was discovered

Country Brazil
Locality Jabuticabeira II (South Coast)
Chapter III

Time

When this individual lived in the broader context of human history

JBT009 455 BCE - 183 BCE
Chapter IV

Story

The narrative of this ancient life

Region & Environment

Sambaqui mounds of the Jabuticabeira II tradition are found along Brazil’s Atlantic coast, where nearshore marine resources could be exploited from land. Shellfish beds and fish availability favored recurring collection and food processing in coastal settings.

Historical Context

The timeframe given for this labeled interval falls within the larger sambaqui period when communities repeatedly occupied and expanded shell-mound sites. Such mounds are best understood as cumulative records of activity across many visits.

Populations & Lifeways

People associated with sambaqui cultures were primarily marine foragers. Their lifeways were organized around shoreline procurement—collecting and processing shellfish and fishing—supplemented by other resources as conditions required.

Archaeology & Material Culture

The key archaeological evidence is the shell-mound body itself, containing layered deposits of shells and fish remains mixed with domestic debris. These layers can capture changes in activity areas and potentially variations in the use of particular marine resources.

Stone tools and other practical artifacts are typically present and reflect everyday processing tasks. Archaeological analysis often focuses on stratigraphy and on how artifacts and faunal remains vary through time within the mound.

Culture & Society

The persistent rebuilding and expansion of mound areas implies community organization and shared knowledge of coastal resource cycles. Regional naming—Jabuticabeira II—captures consistent patterns in the archaeological record, but it does not equate to a single, uniform society.

Legacy & Transition

As later prehistoric developments occurred across the Brazilian coast, settlement and subsistence strategies changed, and sambaqui mound-building was transformed or reduced. The Jabuticabeira II sequence contributes to a broader understanding of how marine lifeways could produce durable coastal monuments and how those lifeways shifted in subsequent periods.

Chapter V

Genetics

These comparisons show genetic similarity, not identity or origin. The populations listed are those whose genomes show statistical alignment to this ancient individual.

Similarity reflects shared history, not shared identity. These are analytical comparisons, not claims about who this person was.

Modern Genetic Admixture

This analysis compares the DNA profile with present-day reference populations, showing statistical similarity to modern reference populations from different regions. The excavation site records where this individual was found, not a fixed modern genetic identity.

America 91.7%
America 91.7%
Native American 91.7%
Asia 8.3%
Chinese & Southeast Asian 6.3%
Indonesian Khmer Thai Myanma 6.3%
Northern Asian 2.0%
Siberian 2.0%
Context

Related Samples

This individual exists within a broader network of ancient samples. No ancient genome stands alone.

Sample ID Culture/Period Date Location Action
CAP007 Lagoa Santa Culture 8547 BCE Capelinha (Southeast Coast), Brazil View
CBE003 Sambaqui Culture of Cabeçuda 1685 BCE Cabeçuda (South Coast) , Brazil View
CBE004 Sambaqui Culture of Cabeçuda 1386 BCE Cabeçuda (South Coast) , Brazil View
CUB002 Sambaqui Culture of Cubatão 756 BCE Cubatão I (South Coast), Brazil View
CUB008 Sambaqui Culture of Cubatão 807 BCE Cubatão I (South Coast), Brazil View
EPS001 Sambaqui Culture of Limão 1442 CE Sambaqui do Limão (Southeast Coast), Brazil View
EPS002 Sambaqui Culture of Limão 811 BCE Sambaqui do Limão (Southeast Coast), Brazil View
EPS003 Sambaqui Culture of Limão 36 BCE Sambaqui do Limão (Southeast Coast), Brazil View
EPS004 Sambaqui Culture of Limão 76 CE Sambaqui do Limão (Southeast Coast), Brazil View
EPS005 Sambaqui Culture of Limão 50 BCE Sambaqui do Limão (Southeast Coast), Brazil View
EPS011 Sambaqui Culture of Limão 850 BCE Sambaqui do Limão (Southeast Coast), Brazil View
GA4002 Sambaqui Culture of Galheta IV 644 CE Galheta IV (South Coast), Brazil View
JBT001 Sambaqui Culture of Jabuticabeira II 720 BCE Jabuticabeira II (South Coast), Brazil View
JBT002 Sambaqui Culture of Jabuticabeira II 721 BCE Jabuticabeira II (South Coast), Brazil View
JBT009 Sambaqui Culture of Jabuticabeira II 455 BCE Jabuticabeira II (South Coast), Brazil View
JBT010 Sambaqui Culture of Jabuticabeira II 742 BCE Jabuticabeira II (South Coast), Brazil View
JBT011 Sambaqui Culture of Jabuticabeira II 700 BCE Jabuticabeira II (South Coast), Brazil View
JBT012 Sambaqui Culture of Jabuticabeira II 410 BCE Jabuticabeira II (South Coast), Brazil View
JBT013 Sambaqui Culture of Jabuticabeira II 723 BCE Jabuticabeira II (South Coast), Brazil View
JBT014 Sambaqui Culture of Jabuticabeira II 184 BCE Jabuticabeira II (South Coast), Brazil View
JBT015 Sambaqui Culture of Jabuticabeira II 364 BCE Jabuticabeira II (South Coast), Brazil View
JBT018 Sambaqui Culture of Jabuticabeira II 541 BCE Jabuticabeira II (South Coast), Brazil View
JBT019 Sambaqui Culture of Jabuticabeira II 553 CE Jabuticabeira II (South Coast), Brazil View
JBT020 Sambaqui Culture of Jabuticabeira II 403 BCE Jabuticabeira II (South Coast), Brazil View
JBT021 Sambaqui Culture of Jabuticabeira II 400 BCE Jabuticabeira II (South Coast), Brazil View
JBT022 Sambaqui Culture of Jabuticabeira II 700 BCE Jabuticabeira II (South Coast), Brazil View
JBT023 Sambaqui Culture of Jabuticabeira II 700 BCE Jabuticabeira II (South Coast), Brazil View
JBT025 Sambaqui Culture of Jabuticabeira II 719 BCE Jabuticabeira II (South Coast), Brazil View
JBT026 Sambaqui Culture of Jabuticabeira II 395 BCE Jabuticabeira II (South Coast), Brazil View
PAI001 Sambaqui Culture 7315 BCE Central, Loca do Suin, Brazil View
PLM001 Sambaqui Culture 1426 CE Palmeiras-Xingu (Southeast Amazonia), Brazil View
SAM014 Kaingang Burial Culture of Sambaqui 1699 CE Kaingang (Southeast Coast), Brazil View
TDA002 Brazilian Archaic Lagoa de Encantada Hunter-Gatherer 2900 BCE Pedra do Alexandre (Rio Grande du Norde, Carnauba dos Dantas), Brazil View
VSM001 Sambaqui Culture of Vau-Una 1318 CE Northeast, Vau - Sta.M.Vitória, Brazil View
Sample ID Culture/Period Date Location Action
JBT001 Sambaqui Culture of Jabuticabeira II 720 BCE Jabuticabeira II (South Coast), Brazil View
JBT002 Sambaqui Culture of Jabuticabeira II 721 BCE Jabuticabeira II (South Coast), Brazil View
JBT009 Sambaqui Culture of Jabuticabeira II 455 BCE Jabuticabeira II (South Coast), Brazil View
JBT010 Sambaqui Culture of Jabuticabeira II 742 BCE Jabuticabeira II (South Coast), Brazil View
JBT011 Sambaqui Culture of Jabuticabeira II 700 BCE Jabuticabeira II (South Coast), Brazil View
JBT012 Sambaqui Culture of Jabuticabeira II 410 BCE Jabuticabeira II (South Coast), Brazil View
JBT013 Sambaqui Culture of Jabuticabeira II 723 BCE Jabuticabeira II (South Coast), Brazil View
JBT018 Sambaqui Culture of Jabuticabeira II 541 BCE Jabuticabeira II (South Coast), Brazil View
JBT020 Sambaqui Culture of Jabuticabeira II 403 BCE Jabuticabeira II (South Coast), Brazil View
JBT021 Sambaqui Culture of Jabuticabeira II 400 BCE Jabuticabeira II (South Coast), Brazil View
JBT022 Sambaqui Culture of Jabuticabeira II 700 BCE Jabuticabeira II (South Coast), Brazil View
JBT023 Sambaqui Culture of Jabuticabeira II 700 BCE Jabuticabeira II (South Coast), Brazil View
JBT025 Sambaqui Culture of Jabuticabeira II 719 BCE Jabuticabeira II (South Coast), Brazil View
JBT026 Sambaqui Culture of Jabuticabeira II 395 BCE Jabuticabeira II (South Coast), Brazil View
Sources

References

Scientific publications and genetic data that inform this profile.

Scientific Publication

Genomic history of coastal societies from eastern South America

Authors Ferraz T, Suarez Villagran X, Nägele K, Radzevičiūtė R, Barbosa Lemes R et al.
Abstract

Sambaqui (shellmound) societies are among the most intriguing archaeological phenomena in pre-colonial South America, extending from approximately 8,000 to 1,000 years before present (yr BP) across 3,000 km on the Atlantic coast. However, little is known about their connection to early Holocene hunter-gatherers, how this may have contributed to different historical pathways and the processes through which late Holocene ceramists came to rule the coast shortly before European contact. To contribute to our understanding of the population history of indigenous societies on the eastern coast of South America, we produced genome-wide data from 34 ancient individuals as early as 10,000 yr BP from four different regions in Brazil. Early Holocene hunter-gatherers were found to lack shared genetic drift among themselves and with later populations from eastern South America, suggesting that they derived from a common radiation and did not contribute substantially to later coastal groups. Our analyses show genetic heterogeneity among contemporaneous Sambaqui groups from the southeastern and southern Brazilian coast, contrary to the similarity expressed in the archaeological record. The complex history of intercultural contact between inland horticulturists and coastal populations becomes genetically evident during the final horizon of Sambaqui societies, from around 2,200 yr BP, corroborating evidence of cultural change.

G25 Coordinates

These coordinates represent a position in genetic space, a tool for comparison, not a conclusion. You can use these to perform custom admixture analysis in G25 Studio.

JBT009,0.05649544,-0.31330176,0.11530352,0.10088212,-0.11354048,-0.01387676,-0.30009636,-0.35411008,-0.01325524,-0.0185604,-0.00040528,-0.00123592,-0.00211972,0.0248172,-0.00700212,0.00068808,0.0046516,0.00168336,0.00269532,-0.00169336,7.336E-05,0.00653444,-0.0018494,-0.00533244,-0.00520243
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