中国で発見された30万年前の木製の道具が旧石器時代の歴史を塗り替えることが研究で判明(300,000-Year-Old Wooden Tools Unearthed in China Rewrite Paleolithic History, Study Shows)

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2025-07-03 中国科学院(CAS)

中国で発見された30万年前の木製の道具が旧石器時代の歴史を塗り替えることが研究で判明(300,000-Year-Old Wooden Tools Unearthed in China Rewrite Paleolithic History, Study Shows)Wooden tools from the Gantangqing archaeological site. (Image by Prof. GAO Xing’s team)

中国雲南省の甘塘箐遺跡で約30万年前の木製工具35点が発見され、東アジア最古かつ旧石器時代全体でも極めて稀な例として注目されている。木製遺物の保存は、酸素の少ない湖沼堆積層によるもので、石器や骨角器、動植物遺物も同時に出土した。標準的な炭素14年代測定では時代特定が困難なため、OSL法、ESR法、古地磁気など複数の年代測定を用いて25万~36万年前と推定された。道具は主にマツ材で、地下植物の掘り出しに使われたとみられる。石器は小型の削器中心で、持ち運び可能な原材料が使われ、角槌による高度な石器製作痕も確認された。これにより、東アジアの旧石器技術が西洋に劣るという従来の見解が見直される。研究は「竹木器仮説」を支持し、熱帯環境での高度な採集経済と技術適応を示している。

<関連情報>

中国南西部、甘棠清から出土した30万年前の木器 300,000-year-old wooden tools from Gantangqing, southwest China

Jian-Hui Liu, Qi-Jun Ruan, Jun-Yi Ge, Yong-Jiang Huang, […] , and Xing Gao
Science  Published:3 Jul 2025
DOI:https://doi.org/10.1126/science.adr8540

Editor’s summary

Wooden tools from the early Paleolithic Period are extremely rare, with only two previously known discoveries, one in Europe and one in Africa. In both cases, the tools were hunting implements, spears, and spear tips. Liu et al. describe several wooden tools from a 300,000-year-old site in China. These tools were not used for hunting, but rather appear to have been designed to obtain and process plant foods. This finding shows that wooden tools were being used across a much wider range at the time, and also provides insight into how cultures from different environments may have developed locally useful implements. —Sacha Vignieri

Abstract

Evidence of Early and Middle Pleistocene wooden implements is exceptionally rare, and existing evidence has been found only in Africa and western Eurasia. We report an assemblage of 35 wooden implements from the site of Gantangqing in southwestern China, which was found associated with stone tools, antler billets (soft hammers), and cut-marked bones and is dated from ~361,000 to ~250,000 years at a 95% confidence interval. The wooden implements include digging sticks and small, complete, hand-held pointed tools. The sophistication of many of these tools offsets the seemingly “primitive” aspects of stone tool assemblages in the East Asian Early Paleolithic. This discovery suggests that wooden implements might have played an important role in hominin survival and adaptation in Middle Pleistocene East Asia.

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