Mysterious footprints left at Laetoli in Tanzania show that a hominin of this time, 3.7 million years ago, did indeed have arches in its feet.
在坦桑尼亚Laetoli所发现的神秘的足印说明古猿在370万年前可能具有足弓结构。
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The first members of our genus appeared between 2.4 and 2.5 million years ago, while Homo erectus, the first hominin to leave Africa, had evolved by 1.8 million years ago.