  The discovery of Paranthropus deyiremeda in 3.3-3.5 million year old fossil
sites in Afar, together with 30% of the gorilla genome showing lineage sorting
between humans and chimpanzees, and a NUMT ("nuclear mitochondrial DNA
segment") on chromosome 5 that is shared by both gorillas, humans and
chimpanzees, and shown to have diverged at the time of the Pan-Homo split
rather than the Gorilla/Pan-Homo split, provides conclusive evidence that
introgression from the gorilla lineage caused the Pan-Homo split, and the
speciation of both the Australopithecus lineage and the Paranthropus lineage.
