© Lori Lappin, the Witch of WITCHCRAFTS ARTISAN ALCHEMY®
I believe that my anthropoid primate ancestors first evolved in (climatically tropical) Antarctica during the late Paleocene (to early Eocene) before the breakup of the Gondwana supercontinent. During this period when Gondwana was still together, they then migrated from Antarctica into what is now called India, which was still joined to Antarctica, Madagascar and Africa. Also during this time, there may have been a population split - one group moving into the Horn of Africa and another remaining on the land of the Indian plate.
The anthropoid primate group moving with the the Indian plate toward Eurasia gave rise to the group of pre-human hominids which would give rise to early archaic Homo sapiens.
Once the Indian plate collided with Eurasia, early pre-human hominids migrated west (otherwise blocked by the the Himalayan Mountains). I believe that pre-human hominids continued to evolve in the bottom red circled area in Image 1 (top image), in the areas of Northwestern India, Pakistan, Afghanistan, Iran and Turkmenistan. I believe that this area is home of the source population for archaic hominids ancestral to Homo sapien lineage.
From this Eurasian source population of archaic hominids, one group split off (brown line), moved through the Middle East, through the Sinai and into Africa (at a time when no Red Sea existed - see Image 2). There this archaic hominid group interbred with other archaic hominids (eventually including hominins known as Paleoafricans, an archaic human lineage genetically exclusive to Native African lineages and not genetically admixed with any non-African human lineages) and became the Negrid populations of African Homo sapiens (Paleoafricans genetically admixed with Homo sapiens who had migrated into Northern Africa during the last glacial maximum).
From the Eurasian source population, another group of archaic hominins split off, moving north (purple line) into European Russia. This group of archaic hominins continued to evolve into various lineages of archaic hominins and Homo sapiens. European Homo sapiens had not yet differentiated yet into Europids, Mongolids or Siberians/Amerindians. Moving through Georgia into an area covering Central North Eurasia and Eastern Europe, one group picked up Denisovan ancestry - this Europid group (my own genetic cluster) turned west (turquoise line) moving deeper into Europe. The remaining group (containing an undifferentiated Mongolid and Amerindian genetic cluster) turned east (light purple line) moving deeper into Russia. Later this group split, one group continuing east (orange line) in Russian Siberia (which would become the Siberian and Amerindian genetic cluster), while the other group turned south (green line) into East Asia (becoming the Mongolid genetic cluster) as the Himalayan Mountains did not block migration into East Asia from the north.
This scenario for the origin and migrations of Homo sapiens fits the newest Chinese model of human origins, fits my own genetic data, and fits what we currently know about population genetic clusters. Native Africans split off from other archaic Homo sapiens first, then there was a split between the Europid and Mongolid/Siberian/Amerindian clusters, then a genetic split occurred between the Mongolid and Siberian/Amerindian clusters.
"The morphological nature of the last common ancestor (LCA) of chimpanzees/bonobos and humans is a fascinating topic in human evolution. Available evidence suggests that both lineages share a LCA that lived inAfrica ∼ 8–6 Myr. However, the hominoid fossil record of this time period is inadequate" ... indeed it is essentially absent. Science can provide only one archeological find in putative support of the theory that the LCA of humans, chimpanzees, bonobos and gorillas evolved in Africa - and that find (Chororapithecus abyssinicus) is itself DISPUTED AS BEING A MEMBER OF THE GREAT APE LINEAGE SHARED BY GORILLAS, CHIMPANZEES, BONOBOS AND HUMANS.
Scientists have no reliable and undisputed evidence that the LCA (last common ancestor) shared by humans, chimpanzees, bonobos and gorillas evolved in Africa. NONE. There are lots and lots of hominid fossils in Africa, but none of them are directly linked to the lineage of Homo sapiens or to the lineage of the LCA shared by Homo sapiens, chimpanzees, bonobos and gorillas.
"Despite the finds, other researchers are not convinced that the conclusions are correct. Although the teeth are very similar to those of modern gorillas, they could have been shaped by parallel evolution of a genetically different species which consumed similar foods. "It is stretching the evidence to base a time scale for the evolution of the great apes on this new fossil. THESE STRUCTURES APPEAR ON AT LEAST THREE INDEPENDENT LINEAGES OF APES, INCLUDING GORILLAS, and they could relate to a dietary shift rather than indicating a new genetic trait," said Professor Peter Andrews at the Natural History Museum in London, UK, who also added, "but the fossil evidence for the evolution of our closest living relatives, the great apes, is almost non-existent."
Given the relative abundance of hominid fossils found in Africa in parallel with the astounding lack of finding an ancestral link among any these African hominids to the lineage of the LCA shared by gorillas, chimpanzees, bonobos and humans or to Homo sapiens directly, I think that the scientific evidence at this point overwhelmingly favors and suggests that all we human peeps were firstly Eurasians.
UPDATE 5/22/17 - 7.2 million year old pre-human Graecopithecus freybergi fossils found in Europe place human ancestors in Europe at least as far back as the Messinian Age of the Miocene Epoch of the Neogene Period - in other words, long before the Paleolithic Era or Pleistocene Epoch.
Articles on the new scientific study just published in the journal PLOS One.
"Begun and his colleagues say the fossil could represent the oldest known human ancestor. They further suggest that the fossil means our ancestors diverged from apes in Southern Europe — not Africa. in a pair of reports published Monday in the journal PLOS One, the scientists describe the fossil and the possible savanna environment in which the species lived. The researchers claim that the Eastern Mediterranean could “just as likely” be the location of ape and human diversification, as well as human ancestor origins, as tropical Africa."
"The common lineage of great apes and humans split several hundred thousand earlier than hitherto assumed, according to an international research team headed by Professor Madelaine Böhme from the Senckenberg Centre for Human Evolution and Palaeoenvironment at the University of Tübingen and Professor Nikolai Spassov from the Bulgarian Academy of Sciences. The researchers investigated two fossils of Graecopithecus freybergi with state-of-the-art methods and came to the conclusion that they belong to pre-humans. Their findings, published today in two papers in the journal PLOS ONE, further indicate that the split of the human lineage occurred in the Eastern Mediterranean and not - as customarily assumed - in Africa. Professor David Begun, a University of Toronto paleoanthropologist and co-author of this study, added, "This dating allows us to move the human-chimpanzee split into the Mediterranean area."Potential hominin affinities of Graecopithecus from the Late Miocene of Europe, PLOS ONE (2017). journals.plos.org/plosone/article?id=10.1371/journal.pone.0177127