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Portrait reconstruction of I12376
Ancient Individual

A woman buried in Argentina in the Ancient South America era

I12376
740 BCE - 200 BCE
Female
Laguna Toro Site 2400 Years Ago
Argentina
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Chapter I

Identity

The biological and cultural markers that define this ancient individual

Sample ID

I12376

Date Range

740 BCE - 200 BCE

Biological Sex

Female

mtDNA Haplogroup

A2-a

Cultural Period

Laguna Toro Site 2400 Years Ago

Chapter II

Place

Where this individual was discovered

Country Argentina
Locality Southwest of Buenos Aires. Laguna Toro
Chapter III

Time

When this individual lived in the broader context of human history

I12376 740 BCE - 200 BCE
Chapter IV

Story

The narrative of this ancient life

The Laguna Toro site, situated in the hinterlands of what is now modern-day Argentina, offers a fascinating glimpse into the Indigenous cultures of South America around 2400 years ago. This period is marked by a variety of cultural and technological developments that were influenced by both environmental factors and interactions with neighboring groups.

Geographic and Environmental Context

Laguna Toro is located in a region characterized by diverse ecosystems, including Andean foothills, wetlands, and forested areas. This geographical diversity provided a rich bounty of natural resources that could be exploited for subsistence. The climate at the time would have been suitable for a range of plants and animals, supporting both hunting and rudimentary forms of agriculture.

Subsistence and Economy

Around 2400 BP, inhabitants of the Laguna Toro area were largely engaged in a mixed subsistence economy. This included hunting, gathering, and the nascent development of agricultural practices. The local fauna, such as guanacos and various bird species, were hunted using sophisticated tools made from bone and stone. Gathering would have focused on native plant species such as tubers, seeds, and berries.

Agriculture was in its early stages, with evidence suggesting the cultivation of maize and possibly other crops suited to the climate and soil of the region. This period might have seen the transition from purely nomadic lifestyles to semi-sedentary communities, fostering more permanent settlements near arable land.

Social Structure and Organization

Social structures during this period were likely kin-based, with clans or extended family groups forming the basic units of society. Leadership may have been based on age, wisdom, or prowess in hunting and gathering, though specific hierarchies were likely fluid. Emerging sedentism suggests an increasing complexity in social organization, potentially laying the groundwork for more stratified societies in subsequent centuries.

Tools and Technology

The Laguna Toro site demonstrates a range of technological expertise, particularly in tool-making. Stone tools, such as projectile points, scrapers, and knives, were crafted using local materials. This period also saw advancements in pottery, with clay vessels being used for storage and cooking. These technological developments facilitated more efficient food processing and storage, allowing communities to thrive in their environment.

Cultural and Religious Practices

Cultural practices during this era were likely tied closely to the natural world. Animistic religious beliefs may have been prevalent, with a deep respect for the environment and its resources. Artifacts such as carved stone figures or symbols inscribed on pottery might indicate ritualistic or ceremonial activities, suggesting a spiritual dimension to daily life.

The Laguna Toro region would have featured seasonal gatherings for trade, social reinforcement, and ceremonial purposes, potentially involving neighboring groups. These interactions could lead to a syncretism of beliefs, technology, and practices, enriching the local culture.

Archaeological Evidence and Interpretation

The archaeological record at Laguna Toro offers rich evidence of these practices. Excavations have uncovered remnants of dwellings, hearths, and storage pits, painting a picture of daily life. Analysis of floral and faunal remains provides insight into diet and subsistence, while pottery shards and tool fragments reveal technological prowess.

Studies suggest that the Laguna Toro site exhibits a broad array of cultural influences, indicating both local innovation and the movement of ideas and goods across regions. This period stands as a transformative stage in the pre-Columbian history of Argentina, setting the stage for future societal developments that would occur in the centuries to come.

In summary, the Laguna Toro site 2400 years ago embodies a pivotal moment of adaptation and innovation within indigenous cultures of South America. It reflects a delicate balance between tradition and transformation, underpinning the resilience and ingenuity of early agrarian societies.

Chapter V

Genetics

The genetic ancestry of this ancient individual

Ancient Genetic Admixture

This analysis compares the DNA profile of I12376 with ancient reference populations, showing the genetic composition in terms of prehistoric ancestral groups.

Ancient Native Americans 76.2%
Ancient Asians 21.4%
Western Steppe Pastoralists 2.4%

Modern Genetic Admixture

This analysis compares the DNA profile with present-day reference populations, showing what percentage of genetic makeup resembles modern populations from different regions.

America 92.3%
America 92.3%
Native American 92.3%
Asia 7.5%
Chinese & Southeast Asian 4.3%
Tibetan 3.6%
Chinese 0.7%
Northern Asian 3.3%
Siberian 3.3%

Closest Modern Populations

These are the modern populations showing the closest statistical alignment to A woman buried in Argentina in the Ancient South America era, ranked by genetic distance. Lower distance values indicate closer statistical similarity.

1
Aymara
2.0766
2
Piapoco
2.2403
3
Yukpa
2.4670
4
Bolivian Lapaz
2.6412
5
Wichi
2.8345
6
Colla
3.1041
7
Cachi
3.4183
8
Mixe
3.6202
9
Karitiana
4.1927
10
Mayan
4.3329
Chapter VI

Context

Other ancient individuals connected to this sample

Sources

References

Scientific publications and genetic data

Scientific Publication

Ancient genomes in South Patagonia reveal population movements associated with technological shifts and geography

Authors Nakatsuka N, Luisi P, Motti JMB
Abstract

Archaeological research documents major technological shifts among people who have lived in the southern tip of South America (South Patagonia) during the last thirteen millennia, including the development of marine-based economies and changes in tools and raw materials. It has been proposed that movements of people spreading culture and technology propelled some of these shifts, but these hypotheses have not been tested with ancient DNA. Here we report genome-wide data from 20 ancient individuals, and co-analyze it with previously reported data. We reveal that immigration does not explain the appearance of marine adaptations in South Patagonia. We describe partial genetic continuity since ~6600 BP and two later gene flows correlated with technological changes: one between 4700-2000 BP that affected primarily marine-based groups, and a later one impacting all <2000 BP groups. From ~2200-1200 BP, mixture among neighbors resulted in a cline correlated to geographic ordering along the coast.

G25 Coordinates

The G25 coordinates for sample I12376 can be used for detailed admixture analysis in our G25 Studio tool.

I12376,0.05623282,-0.31603512,0.11002064,0.09783302,-0.11215108,-0.01007128,-0.29944922,-0.35272674,-0.01489386,-0.016479,-0.0001212,-0.00050668,-0.00114974,0.02481,-0.00587986,0.00076312,0.0061135,0.00362714,0.0008999,-0.0020608,-0.00128024,0.007955,-0.00299624,-0.00438078,-0.00509507
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