The spread of early man does nothing to deny the fact that the Australians reflect the first migrants from Africa. They reflect this population because they have traits common to early homosapien sapiens, e.g., Australoid brows are sloping and with prominent ridges so we can assume that this population is associated with the OOA event 60kya.
In addition, Australians have curly, wavy or straight hair and abundant body hair. Although these traits are common to the Australians—some researchers interpret them as Caucasoid—when clearly that were present among the Australians millenia before they engaged European explorers and settlers of Australia.
This indicates that straight hair was a characteristic of early Africans. A trait maintained by East Indians and other African populations today.
Laubenfels argues that the Australians are remnants of the original African migration to the region 60kya . This view is supported by David Bulbeck who found that the Australian craniometrics are different from the Mongoloid (Polynesian), and Melanoid crania metrics .
The Australian aborigines and Melanesians show cranonical variates and represent two distinct Black populations. Laubenfiels explained that Negroids/Melanoids such as the Tasmanians are characterized by wooly black hair and sparse body hair . Australoids or Australians on the otherhand have curly, wavy or straight hair and abundant body hair. Other differences between these Black populations include Negroid / Melanoid brows being vertical and without eyebrow ridges, whereas Australoid brows are sloping and with prominent ridges
This research indicates that whereas Australian aborigine crania agree with the archaic population of Asia and first group of Africans to exit Africa, they fail to correspond to the Sahulland crania which are distinctly of Southwest Pacific or Melanoid affinity . This suggests that by the rise of Sahulland there were two distinct Black populations in Asia one Austroloid and the other Melanoid .
The OOA population found in Qafzeh cave, Israel and the 80,000-100,000 year old human in China were isolated homo sapien sapien population because 70,000 years ago during the Lower Pleniglacial most of northern Europe and Canada were covered by thick ice sheets. It was this glacial period which made it possible for the Australians to walk to Australia because of the evaporation of oceans during this dry period. Moreover the dominant homo population was Neanderthal.
Your major problem is that researchers assign specific physical traits to Africans , Europeans and Mongoloids—which are common to African populations generally. This has led some researchers to reflect on the light skin of the Khoisan, and straight hair of the Australians and then take this evidence to indicate some association with Caucasoids—when in reality diverse African populations possessed these characteristics.
We must accept the fact that the physical traits of Africans have always varied and the appearance of so-called “white features” among blacks has nothing to do with admixture with Europeans.