"If the rest of the world was populated from Australian Aboriginals then surely the would need to have been a pre-human primate (or any primate) on the Australian continent from which to evolve from. If not - then how did the Australian Aboriginals get here?"
I am very sure I tackled this point in the AOM thread but do not mind repeating this important point. At no stage did I claim the entire course of human evolution played out in Australia, it remains very well established that the early hominins appeared first in Africa and then Eurasia. The first material evidence of hominins reaching the Australasian region (East of the Wallace Line) is shortly before one million years ago, this also matches well with a genetic bottleneck event (dated approx 1.2Mya but between 1.5 - 0.9Mya) which would be expected in this model. I see no evidence of hominins or primates in the region prior to that time and have never argued for anything other than potentially we should consider the hypothesis that Homo sapiens evolved in Australasia. Any hominin that crosses the Wallace Line will inevitably reach Australia, that is not something I came up with but the uttering of a number of academics and we can certainly see why that should be the case.
Edited 1 time(s). Last edit at 23-Feb-18 00:08 by Bruce R. Fenton.