- May 2011
- Rural Australia
I was responding to the claim that ....... "The Aboriginal genome carries no Neanderthal. "A note: let's keep genetics in the background. I understand this is relevant here, anyway we cannot discuss scientific works without a suitable knowledge of the matter.
This said, as for I know several kinds of "humans" cohabited in that far past [with Homo Sapiens and Neanderthals]. One is know: the Denisovans.
It was my understanding that the evidence indicates that all people located outside of Africa, including the First Australian people, have a small percentage of Neanderthal DNA. This may not be correct, and while I have no suitable knowledge of the technical details, I am interested in the findings of those who have such a knowledge.
The explanation that I have read for this is that whichever humans "migrated out of Africa", prior to their migration into Asia and Australia, there must have been some merging with the Neanderthal people. Afterwards (?) and in Asia (?) other DNA evidence indicates merging with other types of early humans such as the Denisovans.
RE: OUT OF AFRICA THEORY
I am interested to learn from those who have a more detailed knowledge of this area of studies, how this "Out-Of-Africa" theory would be effected if it were to be established that the first people here in Australia arrived more than 100,000 years ago. Thanks for any info. The answers I have seen for this is to postulate that the earliest people moved out of Africa in a number of waves, and that the wave of earliest Australian continent dwellers was not 65,000 years ago - there was an earlier migration.
ETA: I have just read the above in connection to my questions:
I am not aware of the controversy involving some asserted <BANNED TOPIC>. Can someone point me to a summary of the controversies in this area? Thankst seems very unlikely to me that Neanderthals got to Australia. However, it seems entirely plausible that other human groups did - Denisovans, or late Homo erectus, or some other group we don't have a name for ye. If the 100,000 year old site really is 100,000 years old, and it really is a human-created shell midden, then this means one of two things. Either the migration models based on <BANNED TOPIC> are incorrect and anatomically-modern humans left Africa much earlier; or the pre-modern humans that we know were in Indonesia for hundreds of thousands of years came to Australia. The latter probability seems quite plausible to me. For ancient humans to be in Java, and Flores, and Luzon, like we know they were, they had to have crossed seas. How hard, then, would it really be for them to get from the Wallacean islands to Australia at a peak glacial period?
Finally here is my starting place: Recent African origin of modern humans - Wikipedia
"Recent African origin," or Out of Africa II, refers to the migration of anatomically modern humans (Homo sapiens) out of Africa after their emergence at c. 300,000 to 200,000 years ago, in contrast to "Out of Africa I", the migration of archaic humans from Africa to Eurasia between roughly 1.8 to 0.5 million years ago.
Since the early 21st century, the picture of "recent single-origin" migrations has become significantly more complex, not just due to the discovery of modern-archaic admixture but also due to the increasing evidence that the "recent out-of-Africa" migration took place in a number of waves spread over a long time period. As of 2010, there were two main accepted dispersal routes for the out-of-Africa migration of early anatomically modern humans: via the "Northern Route" (via Nile Valley and Sinai) and the "Southern Route" via the Bab al Mandab strait.
- Posth et al. (2017) suggest that early Homo sapiens, or "another species in Africa closely related to us," might have first migrated out of Africa around 270,000 years ago.
- Finds at Misliya cave, which include a partial jawbone with eight teeth have been dated to around 185,000 years ago. Layers dating from between 250,000 and 140,000 years ago in the same cave contained tools of the Levallois type which could put the date of the first migration even earlier if the tools can be associated with the modern human jawbone finds.
- An Eastward Dispersal from Northeast Africa to Arabia during 150–130 kya based on the finds at Jebel Faya dated to 127 kya (discovered in 2011). Possibly related to this wave are the finds from Zhirendong cave, Southern China, dated to more than 100 kya. Other evidence of modern human presence in China has been dated to 80,000 years ago.
- The most significant dispersal took place around 70,000 years ago via the so-called Southern Route, either before or after the Toba event, which happened between 69,000 and 77,000 years ago. This dispersal followed the southern coastline of Asia, and reached Australia around 65,000-50,000 years ago. Western Asia was "re-occupied" by a different derivation from this wave around 50,000 years ago, and Europe was populated from Western Asia beginning around 43,000 years ago.
- Wells (2003) describes an additional wave of migration after the southern coastal route, namely a northern migration into Europe at circa 45,000 years ago.[note 3] This possibility is ruled out by Macaulay et al. (2005) and Posth et al. (2016), arguing for a single coastal dispersal, with an early offshoot into Europe.