The Paleoamericans were not modern mongoloid Native Americans. Taubadel, Strauss Hubbe (2017) noted that , “The MDS results confirm previous observations regarding the generalized affinities of the Lagoa Santa crania and their differences from East Asian and other Native American populations (18, 20, 24, 26, 42, 44). Mantel tests (45) confirmed that the overall among-population affinity patterns displayed by all four cranial data sets were significantly and positively correlated (P = 0.001)”. As a result, the authors note that, “It is also worth noting that, although our results are consistent with the high levels of within-continent diversity noted previously, Lagoa Santa crania were not found to be outliers to contemporary modern human cranial variation. That is, their morphological variability falls within that observed among modern human populations, yet their overall morphology cannot be accounted for by a null hypothesis of shared common ancestry with all subarctic Native Americans. “
These authors support the OOA event. They claim that the ancestors of the Australians came from Africa. Taubadel,Strauss,Hubbe (2017) observed that “ There is mounting genetic and morphological evidence for at least two major waves of dispersal into Asia from Africa, with Australomelanesians representing modern descendants of the earlier migration (52, 53)…. Earlier (Paleo)siberian populations would have shared greater genetic affinity with Australasians further south as an outcome of their shared out-of-Africa dispersal history. However, as time progressed, further dispersal from Africa along with differentiation and gene flow within Asia would have altered the genetic signature of the northeast Asian source populations that gave rise to later Paleoeskimo and (possibly) other Native American populations “.
In conclusion the Taubadel, Strauss, Hubbe (2017) concluded that “The earliest (Paleoamerican) migrants were morphologically distinct from later groups, although structured gene flow among the descendants of Paleoamericans and later populations may have contributed to their assimilation in the late Holocene. “.
Noreen von Cramon-Taubadel, André Strauss, and Mark Hubbe. (2017). Evolutionary population history of early Paleoamerican cranial morphology. Science Advances (22 Feb 2017), Vol. 3, no. 2, http://advances.sciencemag.org/content/3/2/e1602289.full