Basal West African is extinct hypothetical lineage. Basal West Africans split 1,020,000-360,000 BP from San/other humans or humans/Neanderthals. Basal West Africans split after Neanderthals diverged from modern humans. Basal West Africans possibly split earliest before San ancestors 300,000-200,000 BP. 2-19% archaic genes introgressed into West African ancestors 124,000 BP to present. Modern West Africans like Yoruba and Mende carry Basal West African ancestry. Part of archaic admixture shared with Eurasians pre-Out-of-Africa. Africans show Neanderthal ancestry lower than Eurasians. Shum Laka foragers modeled as 65% Basal West African plus 35% West African hunter-gatherer. No Basal West African ancestry in modern Cameroon hunter-gatherers. Khoisan genetically distant from West Africans. Taforalts carry Sub-Saharan DNA best matched by West Africans like Yoruba. Yoruba and Mende descend from Basal West Africans plus East African/non-African-like ancestors via migration. Yoruba have 9% Basal West African ancestry. Mende have 13% Basal West African ancestry.