First evidence of hominids goes back almost six millions years [1] and first tools over three millions years ago [2] [1] https://en.wikipedia.org/wiki/Ardipith

First evidence of hominids goes back almost six millions years [1] and first tools over three millions years ago [2] [1] https://en.wikipedia.org/wiki/Ardipithecus https://en.wikipedia.org/wiki/Ardipithecus [2] https://en.wikipedia.org/wiki/Oldowan https://en.wikipedia.org/wiki/Oldowan