#ancestors
"'It makes no sense to say there was only one origin of Homo sapiens': How the evolutionary record of Asia is complicating what we know about our species
As experts study the human fossil record of Asia, many have come to see it as telling a different story than what happened in Europe and Africa.
The story of our ancient ancestors began in Africa millions of years ago. But there are considerable gaps between the first and current chapters of that tale, and some anthropologists are looking to Asia to fill in missing information about how humans evolved.
'The genus Homo evolved in Africa,' Sheela Athreya, a biological anthropologist at Texas A&M University, told Live Science. But as soon as Homo left the continent, 'all bets are off because evolution is going to treat every population differently.'
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There's a big gap in human evolutionary history. We know Homo evolved in Africa and that a human ancestor, Homo erectus, was already in Asia and parts of Europe by about 1.8 million years ago. But what happened in Asia between that point and the time when Homo sapiens arrived around 50,000 years ago? That picture is much less clear."
One bet Athreya is investigating is the notion that there wasn't a single origin of our species, Homo sapiens. Rather, the ancestors of today's humans living in different geographic regions took different evolutionary paths, before eventually coalescing into the human tribe we know today.
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Since the only known skull of a Denisovan looks similar, in many ways, to that of H. erectus, those two groups may actually be one and the same.
'I don't think that genetics is going to find that Homo erectus was a separate dead-end lineage,' Athreya said. 'I would expect Denisovans to be Homo erectus.'
But until more work is done that combines DNA, artifacts and fossil bones in Southeast Asia, the full picture of human evolution cannot yet come into focus the way it has in places like Europe, Athreya said."
https://www.livescience.com/archaeology/human-evolution/it-makes-no-sense-to-say-there-was-only-one-origin-of-homo-sapiens-how-the-evolutionary-record-of-asia-is-complicating-what-we-know-about-our-species