This is my depiction of “Lucy”, a female specimen of the hominin species Australopithecus afarensis which lived in Africa between 4 and 3 million years ago, during the Pliocene Epoch. Like all hominins, Lucy would have been capable of walking upright, but her species’s relatively long forelimbs and curved finger bones suggest a superior climbing ability to modern humans that they would have retained from earlier ape ancestors.
If you’re wondering why her chest is relatively hair-free, some apes do in fact have relatively bare chests (e.g. gorillas).