The Register | Male geladas smack lips to produce distinctive “wobble” in calls to females; sounds follow a similar tempo to human speech.
Infowars
Original link: http://www.theregister.co.uk/2013/04/09/talking_monkeys/
In short the “wild gelada baboons” is stated as the missing link because it makes it has distinctive “lip-smacking”… “lip-smacking”?




