An Analysis of "The Dawn of Human Matrilineal Diversity"

The authors of the recent study titled "The Dawn of Human Matrilineal Diversity" suggest that the divergence of the immediate ancestors of contemporary KhoiSan groups from a common ancestral maternal gene pool—shared with "non-KhoiSan" African groups—couldn't have occurred later than 90,000 years bp, and place the upper bound of this 'split' at a time range of 140,000-210,000 years bp. The goal