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Portrait reconstruction of A man buried in Argentina in the Ancient South America era
Ancient Individual

A man buried in Argentina in the Ancient South America era

A man buried in Argentina during the Arroyo Seco 2 Site 7200 Years Ago

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

I1748
5460 BCE - 5000 BCE
Male
Argentina
Scroll to begin
Chapter I

Identity

The biological and cultural markers that define this ancient individual

Sample ID

I1748

Date Range

5460 BCE - 5000 BCE

Cultural Period

Arroyo Seco 2 Site 7200 Years Ago

Biological Sex

Male

mtDNA Haplogroup

C1c

Y-DNA Haplogroup

P-M45

Chapter II

Place

Where this individual was discovered

Country Argentina
Locality Arroyo Seco II
Chapter III

Time

When this individual lived in the broader context of human history

I1748 5460 BCE - 5000 BCE
Chapter IV

Story

The narrative of this ancient life

The Arroyo Seco 2 site, located in present-day Argentina, is an important archaeological site that provides significant insights into the prehistoric populations that inhabited the Pampas region approximately 7200 years ago. This era represents a transitional period in the prehistoric timeline of South America, where hunter-gatherer societies were adapting to changing ecological conditions. Here is a detailed description of the cultural and environmental context associated with the Arroyo Seco 2 site during this time:

Environmental Context

  • Geography: Arroyo Seco 2 is situated in the Pampas, a region characterized by fertile plains and a temperate climate. This environment would have supported a variety of flora and fauna, making it an attractive locale for mobile hunter-gatherer groups.
  • Climate: Around 7200 years ago, the region was experiencing environmental changes linked to broader climatic shifts after the Last Glacial Maximum. These changes resulted in some fluctuations in temperature and rainfall patterns, affecting the availability of natural resources.

Cultural Aspects

  • Subsistence Strategies: The people of Arroyo Seco 2 primarily subsisted through hunting and gathering. The archaeological record indicates a diet that included large terrestrial mammals, fish, birds, and plant resources. The remains of extinct megafauna suggest some overlap between late Pleistocene and Holocene faunal assemblages, showing adaptation to available game.
  • Tools and Technology: Stone tools dominate the artifact assemblage, reflecting the lithic technology prevalent during the period. These include bifacial points, scrapers, and other implements indicative of hunting and processing activities. The craftsmanship of these tools shows a high degree of skill and adaptation to local resources.
  • Settlement Patterns: The site likely served as a seasonal encampment, part of a broader network of sites used by mobile groups. Evidence suggests temporary structures that were used for shelter and community activities.
  • Social Organization: While the social structures of these groups remain speculative, it is probable that they were organized into small, kin-based groups with fluid leadership structures. Social interactions would have been characterized by cooperation for hunting, gathering, and tool-making.

Archaeological Significance

  • Burials and Rituals: The Arroyo Seco 2 site has yielded burial remains which provide insights into the spiritual and cultural practices of the inhabitants. These findings help us understand aspects of their belief systems, particularly funerary practices, and the treatment of the deceased.
  • Comparative Analysis: Studies of Arroyo Seco 2 offer a broader understanding of the adaptations and cultural practices of prehistoric hunter-gatherers in South America. When compared with other contemporary sites in the region, the variability in material culture provides clues about regional interactions and exchanges.

Challenges and Considerations

  • Preservation: The site's preservation conditions pose challenges to archaeological interpretation. Erosion, bioturbation, and other post-depositional processes can affect the integrity of the layers and the distribution of artifacts.
  • Interpretative Limits: While the evidence from Arroyo Seco 2 provides substantial information about past lifeways, the interpretation of data must consider the extensive time range and ecological changes. This context helps to avoid overgeneralization about cultural dynamics.

Conclusion

The Arroyo Seco 2 site is a pivotal archaeological locale for understanding the lifeways of hunter-gatherer societies in the Pampas region of Argentina around 7200 BP. The insights garnered from this site contribute to our broader understanding of prehistoric human adaptation, technology, and social organization during a time of significant environmental change. This period is marked by resilient and adaptive strategies that ensured the survival and continuity of these early South American cultures.

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
I0041 Lauricocha, Peru 8,600 Years Ago 6640 BCE Lauricocha. Highlands, Peru View
I0039 Lauricocha, Peru 3,500 Years Ago 1660 BCE Lauricocha. Highlands, Peru View
I0040 Lauricocha, Peru 5,800 Years Ago 3990 BCE Lauricocha. Highlands, Peru View
I1748 Arroyo Seco 2 Site 7200 Years Ago 5460 BCE Arroyo Seco II, Argentina View
I0309 Arroyo Seco 2 Site 7700 Years Ago 5850 BCE Arroyo Seco II, Argentina View
I1357 Laramate, Peru 900 Years Ago 900 CE Botigiriayocc. Laramate. Highlands, Peru View
I1484 Laramate, Peru 900 Years Ago 1050 CE Botigiriayocc. Laramate. Highlands, Peru View
I0238 Lauricocha, Peru 8,600 Years Ago 7000 BCE Lauricocha. Highlands, Peru View
I1485 Laramate, Peru 900 Years Ago 790 CE Cueva Yacotogia. Laramate. Highlands, Peru View
I1742 Laramate, Peru 900 Years Ago 750 CE Tranca. Laramate. Highlands, Peru View
I0237 Laramate, Peru 900 Years Ago 1030 CE Botigiriayocc. Laramate. Highlands, Peru View
I0038 Lauricocha, Peru 8,600 Years Ago 6780 BCE Lauricocha. Highlands, Peru View
I0308 Arroyo Seco 2 Site 7700 Years Ago 5620 BCE Arroyo Seco II, Argentina View
I2230 Arroyo Seco 2 Site 7700 Years Ago 7010 BCE Arroyo Seco II, Argentina View
I2232 Arroyo Seco 2 Site 7700 Years Ago 6570 BCE Arroyo Seco II, Argentina View
I2261 La Galgada, Peru 4,100 Years Ago 2280 BCE La Galgada. Highlands, Peru View
I2537 Pica Ocho Site, Chile 700 Years Ago 1230 CE Pica Ocho. Coast, Chile View
I2551 Laramate, Peru 900 Years Ago 1040 CE Huayuncalla. Laramate. Highlands, Peru View
I1752 Conchali, Chile 700 Years Ago 1300 CE Conchalí. Santiago. RM, Chile View
I1753 Los Rieles Site, Chile 5,100 Years Ago 3360 BCE Coquimbo. Los Vilos. Los Rieles, Chile View
I1754 Conchali, Chile 700 Years Ago 1040 CE Conchalí. Santiago. RM, Chile View
Lapa14 Lapa do Santo Site, Brazil 9,600 Years Ago 7600 BCE Lapa do Santo, Brazil View
Lapa01 Lapa do Santo Site, Brazil 9,600 Years Ago 8210 BCE Lapa do Santo, Brazil View
Lapa22 Lapa do Santo Site, Brazil 9,600 Years Ago 8250 BCE Lapa do Santo, Brazil View
Lapa15 Lapa do Santo Site, Brazil 9,600 Years Ago 7730 BCE Lapa do Santo, Brazil View
Lapa05 Lapa do Santo Site, Brazil 9,600 Years Ago 8250 BCE Lapa do Santo, Brazil View
Cuncaicha15-07 Cuncaicha, Peru 9,000 Years Ago 7290 BCE Cuncaicha. Highlands, Peru View
Cuncaicha15-03 Cuncaicha, Peru 4,200 Years Ago 2300 BCE Cuncaicha. Highlands, Peru View
I5456 Saki Tzul Site, Belize 7,400 Years Ago 5490 BCE Saki Tzul, Belize View
I5457 Saki Tzul Site, Belize 7,400 Years Ago 5513 BCE Saki Tzul, Belize View
I7088 Arroyo Seco 2 Site 7400 Years Ago 5620 BCE Arroyo Seco II, Argentina View
I7086 Arroyo Seco 2 Site 7700 Years Ago 5975 BCE Arroyo Seco II, Argentina View
I7090 Arroyo Seco 2 Site 7200 Years Ago 5462 BCE Arroyo Seco II, Argentina View
I8348 Laguna Chica Site 6800 Years Ago 5010 BCE Pampas. Laguna Chica, Argentina View
I8349 Laguna Chica Site 6800 Years Ago 4830 BCE Pampas. Laguna Chica, Argentina View
Cuncaicha15-04 Cuncaicha, Peru 3,300 Years Ago 1431 BCE Cuncaicha. Highlands, Peru View
LAR001 Laranjal Site, Brazil 6,700 Years Ago 4710 BCE Laranjal, Brazil View
LAR002 Laranjal Site, Brazil 6,700 Years Ago 4950 BCE Laranjal, Brazil View
MOS001 Moraes Site, Brazil 5,800 Years Ago 3960 BCE Moraes, Brazil View
I11974 Los Rieles Site, Chile 12,000 Years Ago 10420 BCE Coquimbo. Los Vilos. Los Rieles, Chile View
Lapa24 Lapa do Santo Site, Brazil 9,600 Years Ago 7460 BCE Lapa do Santo, Brazil View
Lapa25 Lapa do Santo Site, Brazil 9,600 Years Ago 7720 BCE Lapa do Santo, Brazil View
I9058 Jabuticabeira 2 Site, Brazil 2,000 Years Ago 410 BCE Jabuticabeira Shell Midden II, Brazil View
I9054 Jabuticabeira 2 Site, Brazil 2,000 Years Ago 90 BCE Jabuticabeira Shell Midden II, Brazil View
I9056 Jabuticabeira 2 Site, Brazil 2,000 Years Ago 670 CE Jabuticabeira Shell Midden II, Brazil View
I9055 Jabuticabeira 2 Site, Brazil 2,000 Years Ago 40 BCE Jabuticabeira Shell Midden II, Brazil View
I9057 Jabuticabeira 2 Site, Brazil 2,000 Years Ago 390 BCE Jabuticabeira Shell Midden II, Brazil View
I3443 Mayahak Cab Pek Site, Belize 9,300 Years Ago 7472 BCE Mayahak Cab Pek, Belize View
I8350 Laguna Chica Site 6800 Years Ago 7000 BCE Pampas. Laguna Chica, Argentina View
I9056 670 CE Jabuticabeira Shell Midden II, Brazil View
I9057 390 BCE Jabuticabeira Shell Midden II, Brazil View
I9054 90 BCE Jabuticabeira Shell Midden II, Brazil View
I9055 40 BCE Jabuticabeira Shell Midden II, Brazil View
Lapa24 7460 BCE Lapa do Santo, Brazil View
Lapa25 7720 BCE Lapa do Santo, Brazil View
I11974 10420 BCE Coquimbo. Los Vilos. Los Rieles, Chile View
I11974 10420 BCE Coquimbo. Los Vilos. Los Rieles, Chile View
I9058 410 BCE Jabuticabeira Shell Midden II, Brazil View
I3443 7472 BCE Mayahak Cab Pek, Belize View
I11974 10420 BCE Coquimbo. Los Vilos. Los Rieles, Chile View
I8350 7000 BCE Pampas. Laguna Chica, Argentina View
I11974 10420 BCE Coquimbo. Los Vilos. Los Rieles, Chile View
I11974 10420 BCE Coquimbo. Los Vilos. Los Rieles, Chile View
I11974 10420 BCE Coquimbo. Los Vilos. Los Rieles, Chile View
Sample ID Culture/Period Date Location Action
I1748 Arroyo Seco 2 Site 7200 Years Ago 5460 BCE Arroyo Seco II, Argentina View
I7090 Arroyo Seco 2 Site 7200 Years Ago 5462 BCE Arroyo Seco II, Argentina View
Sources

References

Scientific publications and genetic data that inform this profile.

Scientific Publication

Reconstructing the Deep Population History of Central and South America

Authors Posth C, Nakatsuka N, Lazaridis I, Skoglund P, Mallick S et al.
Abstract

We report genome-wide ancient DNA from 49 individuals forming four parallel time transects in Belize, Brazil, the Central Andes, and the Southern Cone, each dating to at least ∼9,000 years ago. The common ancestral population radiated rapidly from just one of the two early branches that contributed to Native Americans today. We document two previously unappreciated streams of gene flow between North and South America. One affected the Central Andes by ∼4,200 years ago, while the other explains an affinity between the oldest North American genome associated with the Clovis culture and the oldest Central and South Americans from Chile, Brazil, and Belize. However, this was not the primary source for later South Americans, as the other ancient individuals derive from lineages without specific affinity to the Clovis-associated genome, suggesting a population replacement that began at least 9,000 years ago and was followed by substantial population continuity in multiple regions.

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