Contemporary African populations harbor approximately 2% genetic material from an archaic population. This archaic population split from ancestors of modern humans around 700kya. Introgression happened about 35kya. Simulations reject the no-admixture null model. Three candidate regions show deep haplotype divergence and unusual linkage disequilibrium. One locus on chromosome 4 has a >31kb archaic segment from a central African extinct taxon. Archaic polymorphisms introgressed via recent interbreeding with Lower-Middle Pleistocene hominins. Admixture detected in Mandenka, Biaka, and San populations. Introgressive haplotypes surveyed across sub-Saharan Africa. Results support African archaic contributions beyond non-African Neanderthal/Denisovan focus. Model includes recent population structure with archaic gene flow. Approximate-likelihood methods confirm admixture proportions and timings. Basal clade sizes in candidates are small. Frequency of introgressive variants varies in expanded African samples. Extinct taxon likely persisted until recent times in Africa.