3.7 mya–50,000 ya
Roots of our family tree
Bone fragments reveal that human ancestry is far more complex than first thought.
3.7 MILLION YEARS AGO*
The LAETOLI FOOTPRINTS, preserved in volcanic ash, prove that our earliest ancestors walked upright. • Tanzania, found in 1978
3. 2 MILLION YEARS AGO
A fossilized skeleton, LUCY, is the most complete set of bones of those ancestors. • Ethiopia, 1974
2.4 TO 1.4 MILLION YEARS AGO
Fossils from OLDUVAI GORGE include an early toolmaker and reveal East Africa as the cradle of humanity. • Tanzania, 1959
1. 8 TO 1.75 MILLION YEARS AGO
Fossils found in DMANISI show when early humans first migrated out of Africa. • Georgia, 1991
335,000-236,000 YEARS AGO
An entirely new species of human, HOMO NALEDI, is found in a…
