Australopithecus is the first "human" to start evolving out of a ape, still very ape like standing at two feet tall they had the brain size of a orange, they also were around 4 million years ago and left around 1 million years ago. My sources are https://sites.google.com/arlington.k12.ma.us/ehresearch/homo-sapiens-sapiens, https://ytcropper.com/cropped/y25bbcd5f1902ef, and https://www.dinosaurcorporation.com/skull.html. The australopithecus were the first to start evolving out of ape and into human, even though they had the smallest brains they had survived the longest because they had been vegetariens and didn't try to attack large animals.
