FWIW - Humans, if you count all genus of them, have been around for 150,000+ years. A ball-park date of 190-170,000 B.C. was the appearance of what is called mtaDNA translated to Mitochondrial DNA that is passed on only among women and can be traced back to what is called Mitochondrial Eve. This is at the end of the homo erectus period and the beginning of the homo sapien era. Homo erectus actually goes back approx 1.8 million years. Homo habilis preceeded them starting about 2.5million B.C.