MATSUE, Shimane Pref. (Kyodo) A team of archaeologists and researchers said Tuesday that they have likely unearthed the oldest stone tools used in Japan — 20 artifacts dating back some 120,000 years — at the Sunabara remains in Izumo, Shimane Prefecture.

The basic assumption among researchers has been that the first human ancestors landed in Japan about 40,000 years ago. The new findings might pave the way for a review of mankind’s history in Japan and give impetus to research on the Paleolithic Period.

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