Homo sapiens did evolve around 120,000 years ago, but
Australopithecus afarensis (Lucy) is actually 3.2 million years old.
Lucy was very controversial because the discovery basically proved that hominines walked upright as far back as 3.2 million years ago. Her brain was not much bigger than a chimp's. So, basically, we evolved our upright stance long before we evolved intelligence.