How old is the homo sapiens species?
Homo sapiens
Recent divergence of Eurasian lineages was sped up significantly during the Last Glacial Maximum, the Mesolithic and the Neolithic, due to increased selection  pressures and due to founder effects
associated with migration.[75]
Alleles predictive of light skin have been found in Neanderthals,
[76] but the alleles for light skin in Europeans and East Asians, associated with KITLG and ASIP, are (as of 2012) thought to have not been acquired by archaic admixture but recent mutations since the LGM.[77]
Phenotypes associated with the "white" or "Caucasian" populations of Western Eurasian stock emerge during the LGM, from about 19,000 years ago.
Average cranial capacity in modern human populations varies in the range of 1,200 to 1,450cm3 (adult male averages).  Larger cranial volume is associated with climatic region, the largest averages being found in populations of Siberia and the Arctic.[78]
Both Neanderthal and EEMH had somewhat larger cranial volumes on average than modern Europeans, suggesting the relaxation of selection pressures for larger brain volume after the end of the LGM.[79]