What's the furthest back we can prove human existence? Is there good reason to believe it goes further then this point?

The fur th est back we can prove human existence is through foss il records and gen etic evidence . The oldest known foss ils of our species , H omo s api ens , are estimated to be around 3 0 0 , 0 0 0 years old . However , it is believed that our species has been around for much longer than that . \n \n There is evidence to suggest that our ancest ors were present in Africa as far back as 7 0 0 , 0 0 0 years ago . Additionally , gen etic studies have shown that all living humans share a common ancest or who lived in Africa around 2 0 0 , 0 0 0 years ago . \n \n Wh ile we cannot prove the existence of our ancest ors beyond this point , it is believed that they were capable of surv iving and th riv ing in a variety of environments . Some scient ists believe that our ancest ors may have been present in Africa even a million years ago . \n \n Over all , while we cannot prove human existence beyond a certain point , there is strong evidence to suggest that our species has been around for much longer than we currently know . </s>