I am writing this article to summarize the conclusions and create what might be considered a claim of priority. It is in the form of a timeline with intermittent digressions into explanations.
700kya-350kya AMH, according to the 'genetic clock' diverged from AH. That required reproductive isolation. This range is broad because analysis of different gene sites, most commonly found on the X and Y chromosomes yield different results. The divergence most likely was the result of geographic isolation during an interglacial with one between 424kya and 374kya appearing to be the most attractive.
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400kya-150kya AMH evolves in isolation. Developing distinct cranial, post cranial and behavioral differences. During the period genetic drift (founders' effect) resulted in the MtDNA Eve and Y Chromosomal Adam. I will argue that the during this time AMH developed agriculturally based civilizations that was the source of the various anatomical and behavioral differences.
150kya-70kya AMH expanded its range into SW Asia and South Africa. In many cases, due to climactic conditions, it reverted to hunting-gathering life tracks, but brought behavior and cognitive advantages that increased the sophistication of tool making and likely the domestication of local canids.
70kya-20kya The Toba Supervolcano severely stressed AH populations over most of South Asia and AMH populations spread, from 60kya to 35kya, across all of South Asia. From about 55kya to 20kya much of the Indian subcontinent was a moderate subtropical to tropical monsoon climate with several large rivers fed by seasonal melts from the northern mountains. Therefore, I argue that seaside cities with reliance on fishing and limited agriculture emerged.
20kya to 10kya This was a time of extreme climate variability and a sea rise of 120 metrs that would have submerged virtually all cities. Meltwater Pulse 1A took place during this time which I contend was 'the flood'. Refugees fled to higher ground and, over time, created civilizations over SW Asia, NE Africa and Eastern Europe.
I will look at several technical aspects such as the emergence of metelurgy, which appears to be more like recovered technology than innovation, with bronze smelting taking place much earlier than one would expect. I will also explore the domestication of the dog, taking place prior to 40kya which likely provided AMH with prohibitive competitive advantage over AH and contributed greatly to the ease with which AMH replaced AH. I will discuss how the reproductive habits of AH (self-imposed isolation) has led to the illusion of repeated population bottlenecks and created the curious absence of AMH-AH interbreeding. A recent paper suggests that AMH and AH may have had incompatible Y chromosomes which whould have limited all issue from interbreeding to females, leaving the AMH Y chromosome pristine, while minor evidence of interbreeding could be found on the MtDNA.
I will spend one chapter looking at mythology and how it may square with the conclusions I draw. For example, both Egyptian and Sumerian Kings' lists include kings prior to the Flood, which if defined as Meltwater Pulse 1A, took place between 13.5kya and 14.7kya. Both lists are problematic because they likely contain lunar calendars in the earlier times and solar calendars later and, in the case of Sumerian lists may chronicle contemporanious and competing kings. However, assuming that the antedeluvian 'kings' on the Sumerian lists are actually chronicling royal houses measured in lunar 'years', then the list starts at about 46kya. That makes sense, if the history begins in South Asia and continues after the flood has submerged the original kingdoms moved to Egypt and Sumer.
I have a major secondary project that dovetails with Before the Flood that I have named Paleosociology which I will discuss briefly here, but will delve into quite deeply in another book.