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Palaeontological evidence for an Oligocene divergence between Old World monkeys and apes
The oldest known fossil ‘ape’ is described, represented by a partial mandible preserving dental features that place it with ‘nyanzapithecine’ stem hominoids, and the oldest stem member of the Old World monkey clade is reported, representing by a lower third molar.
Initiation of the western branch of the East African Rift coeval with the eastern branch
Rifting of the eastern part of the East African Rift System was thought to have begun several million years before its western counterpart. Reconstructions of drainage development, combined with…