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Researchers have discovered that former Clovis culture peoples from North America emigrated to South America about 11,000 years ago and mysteriously disappeared.
In a new study, researchers analyzed the DNA of 49 people living in a period of 10,000 years in Belize, Brazil, the central Andes and southern South America. They discovered that some of these people were genetically related to people from the Clovis culture, one of the oldest archaeological cultures to spread throughout North America. Although archaeologists suspected that the inhabitants of Clovis have migrated south, they have not yet found any artifacts of Clovis in South America.
This visual abstract describes the standpoints on the settlement of the Americas, including four events of southward migration and a notable population continuity in most of South America after their arrival.
Posth et al./Cell
"We did not expect to find a relationship with people associated with Clovis culture in South America," said Nathan Nakatsuka, PhD student at Harvard Medical School and co-author of the new study. Posted in Cell, in one Cell Press release. "But it seems that the expansion of the lineage associated with Clovis has spread to parts of Central America and South America."
The researchers found that the 49 people in the study belonged to the migrants who crossed the Bering Strait in North America more than 15,000 years ago. Genetic distinctions between people showed that they had traveled south in at least three different migration groups, including one, the Clovis undocumented group.
In addition to discovering Clovis people in South America, researchers also discovered that these people had disappeared from the continent about 9,000 years ago and had been replaced by people of different genetic ancestry. We do not know yet Why this has happened, but insight means that archaeologists can begin to investigate.
"The large-scale replacement of the population is a process that archaeologists did not expect much," said David Reich, a geneticist at Harvard Medical School and Howard Hughes Medical Institute, co-author of The Harvard Medical School. study, in the Cell Press release. "This is an exciting example of how ancient DNA studies can reveal past unconfirmed events and therefore stimulate new work in archeology."
Cell published the study the same week that Science published two other major studies on the first peoples of the Americas. One of these has identified the origins of Nevada's 10,200-year-old 'cavern of the spirit' mummy.
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