ANCESTOR EVOLUTION
How Australopithecus afarensis became Homo sapiens
DID YOU KNOW? Lucy’s bones are kept in the National Museum of Ethiopia
AUSTRALOPITHECUS AFARENSIS
3.9 TO 2.9 MILLION YEARS AGO
Lucy’s species had a brain a third the size of a modern human’s. They had a low, sloping forehead as they had a smaller frontal lobe. Large brow ridges gave structural support to the skeleton from powerful chewing muscles that worked on tough foods.