Even Sub-Saharan Africans of today show traces of a distinct episode of interbreeding within the last 50,000 years. In this case, the source may have been as-yet-unknown remnants of the ancient species Homo heidelbergensis – a direct ancestor of both Homo sapiens and Homo neanderthalensis – surviving somewhere in southern Africa.
即使在今天的撒哈拉以南非洲，也有过去50 000年中杂交的明显痕迹。在这里，杂交来源也许是目前尚不为人知的存活在非洲南部的远古人种、智人和尼安德特人的直接祖先——海德堡人。