possibly earlier 8-25 million years ago 8-25 million years ago 8-25 million years ago Chimpanzee-human last common ancestor 8-25 million years ago last common human-chimpanzee ancestor chimpanzee-human Chimpanzee-human last common ancestor last common human-chimpanzee ancestor 6 million years ago last common human-chimpanzee ancestor split from the human branch chimpanzee-human chimpanzee-human the last common ancestor we share with chimps common ancestor of humans and chimpanzees chimpanzee-human Chimpanzee-human last common ancestor the last common ancestor we share with chimps anywhere from 8 million to 25 million years Chimpanzee-human last common ancestor anywhere from 8 million to 25 million years somewhere around 5-7 million years ago last common human-chimpanzee ancestor last common human-chimpanzee ancestor common ancestor with humans common ancestor Chimpanzee-human last common ancestor chimpanzee-human 8-25 million years ago chimpanzee-human 8-25 million years ago