Posted on 07/28/2019 9:41:55 PM PDT by SunkenCiv
In new research published in Proceedings of the National Academy of Sciences, we detail how during this remarkable journey the ancestors of modern humans met and genetically mixed with a number of archaic human groups, including Neandertals and Denisovans, and several others for which we currently have no name. The traces of these interactions are still preserved in our genomes.
For example, all modern non-African populations contain about 2 percent Neandertal ancestry. This strong universal signal shows that the original Neandertal mixing event must have happened just after the small founding population left Africa.
We can even use the Neandertal genetic signal to date when they left Africa. The large size of Neandertal DNA fragments in the genome of an ancient skeleton from southern Russia, which is 45,000 years old, shows that at most 230-430 generations could have passed since the initial mixing event (dating it around 50-55,000 years ago).
By analyzing where the archaic genetic traces are found today (from previous genetic studies) and using paleovegetation maps that identify favorable savannah-like habitat along the route 55,000 years ago, we have reconstructed the likely geographic locations and number of the archaic hominin mixing events.
(Excerpt) Read more at phys.org ...
Correct:
Year of Discovery: 1829History of Discovery:
Neanderthal 1 was the first specimen to be recognized as an early human fossil. When it was discovered in 1856 in Germany, scientists had never seen a specimen like it: the oval shaped skull with a low, receding forehead and distinct browridges, the thick, strong bones. In 1864, it became the first fossil hominin species to be named. Geologist William King suggested the name Homo neanderthalensis (Johanson and Edgar, 2006), after these fossils found in the Feldhofer Cave of the Neander Valley in Germany (tal—a modern form of thal—means “valley” in German). Several years after Neanderthal 1 was discovered, scientists realized that prior fossil discoveries—in 1829 at Engis, Belgium, and in 1848 at Forbes Quarry, Gibraltar—were also Neanderthals. Even though they weren’t recognized at the time, these two earlier discoveries were actually the first early human fossils ever found.
http://humanorigins.si.edu/evidence/human-fossils/species/homo-neanderthalensis
I agree, I think they were the result of a post migration evolution adaptation of a much much earlier migration.
Interesting read, thanks
"What the different genetic studies across this region tell us is that the ancestors of modern humans appear to have met and mixed with four different archaic hominins, in at least six events. And this all happened in the very short window of time between leaving Africa 50-55,000 years ago, and arriving in Australia and New Guinea at most 5,000 years later. "
I expect more archaic hominins to be found.
Looks like Sundaland was a hopping place for “mixing events.”
Sunda or later.
Archaic hominims are the only kind there were. As the late J.A. West said, cultural, civilizational, and species progress is a sort of myth, drawing an upward line between "stupid cave men and smart old us with our hydrogen bombs and striped toothpaste."
Hancock eventually comes around to someone else's ideas, if they're sufficiently well explained to him, and as long as there's some reader interest in it. He's not reliable as a first source, imho.
Of course, the same thing was said by George Bernard Shaw about William Shakespeare, that he was a great storyteller, provided that someone had told him the story first. I read that somewhere. :^) And that was before the nimrod Shaw decided that Shakespeare didn't write Shakespeare. Guess it was someone else who had a story told to him or her first...
It was sort of related -- the old lady who did those "Where's the Beef?" ads turned out to be a distant cousin. /jk
For Shame! Kicking the “Out of Africa” thing out the window /sarc
Neandertals are in our ancestry, but morphologically they no longer walk the Earth. That happened mostly because they never invented dental floss.
I NEEDED that bit of humor !!!! THANX !
Yup, dryer than now.
https://www.freerepublic.com/focus/news/1669466/posts
https://www.freerepublic.com/focus/chat/2758838/posts?page=4#4
https://www.freerepublic.com/focus/chat/3195755/posts
and from late prehistory/classical times, by contrast:
https://www.freerepublic.com/focus/news/1669466/posts?page=27#27
And, the glaciation of Africa during the Holocene hasn’t been studied, primarily because it puts the hurt to the “Out of Africa” replacement master-race nonsense.
The Late Quaternary glaciation of Africa: A regional synthesis
Author links open overlay panelHenry A.OsmastonabSandy P.Harrison
https://www.sciencedirect.com/science/article/pii/S1040618205000406
Very useful broad summary of DNA data so far.
That's the "Out of Africa" view, yes.
"'Civ, you appear to be descended from the Earl of Sandwich..."
Pretty darned good topic, thanks to everyone.
Yes. Before there was homo sapiens, there were archaic forms of humans—homo erectus, homo antecessor, homo heidelbergis and homo neanderthalis and homo denisovian. Some now say both homo sapiens and homo neanderthalis derived from homo heidelbergis, as did the Denisovians (only discovered in 2010).
So, homo heidelbergis eolved into neanderthals/denisovians in Eurasia, and evolved into homo sapiens in Africa. The homo sapiens in Africa went on to breed and absorb whatever non-homo sapiens were still there, and once out of Africa, bred and absorbed the remaining Neanderthals and Denisovians in Eurasia.
Now it appears there were other non-homo sapiens in Eurasia that haven’t been yet discovered, but show up in or DNA.
To simplify; At one time, there were several species of homo—all closely related. Think of horses, zebras and burros. Homo sapiens is not just the result of one species, but a mixture of some of these others, which appears in our DNA. The rest of those non-mixed homo lineages eventually died off, leaving only homo sapiens, but it turns out, we’re modified by some of these others.
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