Sure, chimpanzee-like. But like common chimpanzees, or like bonobos? The fact that bonobos split fairly recently, following habitat isolation, implies that the

Sure, chimpanzee-like. But like common chimpanzees, or like bonobos? The fact that bonobos split fairly recently, following habitat isolation, implies that the common ancestor was more like common chimpanzees. And that, as TFA argues, self-domestication occurred independently in the human and bonobo lines. But I'm not aware of any paleontological support for that. And I can't quite imagine what such evidence would look like.