jan 1, 3200000 BC - family Hominidae lived

Description:

In what today is Ethiopia, members of the biological family Hominidae
lived, represented today by the nickname "Lucy." The angle of her knee
joint indicates that she walked upright. She was 1.1 meters (3 feet 8
inches) tall. Walking upright improves the ability to run after game
and to run from danger.

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