No biologist or serious anthropologist doubts
More hypothetical is why & how hominids split. I'd think
-India approaching Asia c 30 Ma caused the cercopithecoid/hominoid split (N/S),
-India further under Asia c 20 Ma caused the lesser/great ape split (E/W): hominoids colonized the western Tethys coastal forests,
-the Mesopotamian Seaway closure c 15 Ma caused the hominid/pongid split (W/E): pongids forced hylobatids higher into the trees,
-hominids in the Tethys=Med.Sea colonized the incipient Red Sea, -Gorilla/Homo-Pan split c 8 Ma, when Gorilla followed the incipient Rift: Pliocene gracile afarensis->Pleist.robust bosei,
-Pan/Homo split c 5 Ma when the Red Sea opened into the Gulf: Pliocene Homo followed the S-Asian coastal forests, Pan the E-Afr.coastal forests:
Pliocene gracile africanus->Pleist.robust robustus (Pan//Gorilla), -Pleistocene coolings made erectus-like Homo shallow-divers along the Indian Ocean (+ inland branches along rivers/lakes), later also Med.Sea etc.
?? Si non é vero...
In any case, no antelope runners! :-D
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