11 jul 1974 ano - An archaeologist named Donald Johanson finds parts of a skeleton that date back 3.2 million years. The importance of this discovery (other than the skeleton's incredible age) was Lucy's bone structure, which confirmed that Lucy walked upright (affirming that humans had been bipedal before our brains developed).
Adicionado na linha do tempo:
Data:
11 jul 1974 ano
Agora
~ 51 years ago