Our species, Homo Sapiens, appeared in Africa about it 300 000 ANSHowever, scientists are still struggling to determine exactly in a clearly developed natural environment. Was the dominant idea until recently Lawns and savannes The ecological “cradle” of humanity. An environments like a tropical forest were reviewed barrier It was not aged in human expansion and in mankind.
In this regard, the research contradicts Asian. In this region, developed behavior and advanced cognitive capabilities in old tropical forests attract more evidence.
Man We lived Sumatra, in Indonesia in a tropical forest environment 70,000 years ago. The difficulties created by tropical forests were also encountered. In the Niah Cave, the poisonous plants from neighboring forestry in Borneo have already become 45 000 ANS. This occurred shortly 46,000 years ago later the first appearance in this region. In the same way, in Sri Lanka, there is evidence Direct dependence of the resources of the tropical forest for at least 36,000 years.
These discoveries show that people are able to live in a tropical forest so that our species can live before leaving the cradle Africa. The oldest ever evidence 18,000 years of communication of man in African tropical forests.
Notre learn He recently repeatedly repeatedly repeatedly repeatedly repeatedly repeatedly repeatedly repeatedly repeatedly International researchers working in Côte d’Ivoire, our team showed that human groups live in the African age tropical forest 150,000 years ago.
Our study
The history of this discovery was first examined in the 1980s in the first time in the first time Félix Houphouët-Boigny University in Bété d’Ivoire, Félix Houphouët-Boigny University for the first time under the Ivotian and Soviet mission. This was the results of the first study,Published in 2000 Today, a long sediment sequence of stone tools in an area covered by a tropical forest has been found.
This site is one of several people in Africa to introduce a stratification of about 14 meters sediment deposits with a few levels of Leban. In the 1980s and 1990s, more than 1,500 units were found during the excavation campaigns. At the time, the exact acquaintance could not be determined when the instruments or the environmental features of the earth were deposited.
We returned 36 years later to find the exact location of Bété I.
The sediments where stone tools were found have used two dating techniques to date: Optical stimulated luminescence and electronic paramagnetic resonance. These methods allowed to determine the age of quartz grains in different places in the sedimentary layers. We also examined the sediments looking for Pollen, Fitoliths (silicons produced by plants) and leaf wax.
These analyzes showed that 150,000 years ago, the earth was a powerful forest in the western wet forests. The lower concentration of grass grasses is not in a narrowest strip of the site, but such as oil palm trees, such as the palm trees, the shelter of important plants in this type of ecosystem. This environmental information comes from the samples taken at the same level by sequence and deepest means. This indicator allowed to close the participation of human groups on the site at least 150,000 years ago.
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What we discovered
The results indicate that the types of ecological diversity are in the center of the diversity and are able to live in different habitats and ecosystems from the beginnings of people. In other words, a person can only adapt to many different environments, but also unable to solve continuously there By developing specific knowledge.
The presence of this discovery in West Africa and shows that our history is important to learn all the regions of Africa to better understand.
Archaeologists in West Africa have also stressed many different cultural behaviors from this early stage. For example, in 2021, in the Falémé Valley in Senegal, Ravin Blanc I., divide About 125,000 years of occupation are very different with stone tools with stone tools ruminate Mangrove de Bargny 1 (Senegal) coast on the coast.
These tools also have differently One Senegalese site for about 140,000 years of detected in Bargny 3; Or it is a little older than the white ravine, but it differs from this site, more than the material culture, more than in a more remote and very different environmental environment.
Prospects
Although the historical sketch of human evolution in West Africa has begun, a clean trajectory, which has many different regional features, seems to be watching.
New discoveries may concern our knowledge of human evolution. The future will inform us, but the oldest prehistoric of mankind, before giving our first steps outside our “native” continued, in a very large geographical and ecological area in Africa.
