Sub-Saharan Africa is, geographically, the area of the continent of Africa that lies south of the Sahara. The first large-scale study of ancient human DNA from sub-Saharan Africa opens a long-awaited window into the identity and origins of prehistoric populations.
Whole-genome sequences of Sub-Saharan tribal DNA shows that the ancestors of the hunter-gatherers interbred with one or more archaic human populations, and contributed archaic genetics that diverged from modern humans around 1.2 to 1.3 million years ago, possibly the now "extinct" Homo erectus, who's DNA is not shared by modern Asians or Caucasians (Europeans).
Archaic Hominin Introgression in Africahttps://academic.oup.com/mbe/article/34/10/2704/3988100
Genetic evidence for archaic admixture in Africa
Hunter-gatherer genomes a trove of genetic diversity