 It has been accepted that they are "Australopithecus boisei" and it’s also been accepted that the "A. boisei" was not a tool maker.Another species, called "Homo ergaster" was discovered and dated the same age as "A. Boisei" 1.7 million years ago.In 1975 this species was found in northern Kenya, Koobi Fora by Bernard Ngeneo.