Middle Stone Age
A period of African prehistory between the Early Stone Age and the Late Stone Age, generally considered to have begun around 280,000 years ago and ended around 50–25,000 years ago.
Alternative form of synthesizable
plural of bailiff-errant
plural of cartel
初期旧石器時代と後期旧石器時代の間にあたるアフリカの中期旧石器時代を調査している考古学者は、複雑な行動を示唆する石器を発見した。
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