Mating with someone from a different tribe had been happening for hundreds of thousands of years, a recent study revealed. We have reported previously that foreign brides used to be a norm in human history. Alan Rogers, a scientist from the University of Utah, spent 3 years trying to solve an evolutionary puzzle of our prehistoric ancestors, and its points out to some interbreeding at time of super-archaics.
Super-archaic love and romance
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As the new research shows, our distant ancestors also were falling in love with someone from other tribes.
It was this cross-breeding between different tribes of ancient population that allowed to discover a new group that lived during the time of the first known ancestors of the modern humankind, Denisovans and Neanderthals.
After untangling a million of years of human evolution (our humankind, which is known as “homo sapiens”, traditionally thought to be only 200,000 years old), the University of Utah scholar realized something was missing in the widely accepted model, and it was another group of early humans, which he named super-archaic.
It was this group that left their trace on DNA of a Neanderthal-Denisovan ancestor around 700,000 years ago. This prompted authors of the research to propose a revision to the timeline of human migration out of Africa to Europe and Asia, which was previously thought to have happened later.
The author believes it is the most ancient known interbreeding event in the history of humankind.
The secrets of human DNA
The discovery was made after thoroughly screening mutations shared between modern Africans and Europeans, as well as prehistoric Denisovans and Neanderthals. The research revealed 5 instances of interbreeding around the mark of 700 thousand years ago (3.5 times longer than the age of the modern humankind as a species, as estimated).
The line of Denisovans and Neanderthals had been split from super-archaics for around a million years when they interbred. To compare, the line that became modern humans was separated from Denisovans-Neanderthals for about 750,000 years when they interbred.
Thus, it appears that super-archaics became their own species about 2 million years ago. These estimations are coinciding with archaeological evidence from Eurasia continent dated at 1.85 million years.
According to researchers, there were 3 migrations from Africa to Eurasia.
- Super-archaics were the first group out of Africa that managed to reach Eurasia and settled there.
- The second wave happened around 700,000 years ago, when Denisovan-Neanderthal ancestors migrated to Eurasian continent, and this is when they interbred with the group that evolved from super-archaics.
- The modern humans migrated to Europe 50,000 years ago in the third wave, and interbred with the humans who lived there, including Neanderthals.
Getting answers to the puzzles of human evolution gives us exciting insights into the burning question of how we as people happened to be on this Earth. Making sense of our ancient history allows us to feel more open to exploring new horizons for ourselves.
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