On the ground lithic rod from the Tatsuki site : an analogical reasoning to the function

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  • 置戸町田付遺跡出土の磨製棒状石製品 : 機能の類推
  • オケト マチダ ツキ イセキ シュツド ノ マセイ ボウジョウセキ セイヒン : キノウ ノ ルイスイ

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Abstract

The present paper reports the ground lithic rod from the Tatsuki site, located along the upper Tokoro River, Oketo Town in eastern Hokkaido. Through a comparison to the techno-morphologically similar ground stone artifact from the Ankarito 7 site in southern Ishikari Lowland in central Hokkaido, observed morphological similarities and differences between these two unique artifacts are described. The archaeological layers where these artifacts were yielded and the lithic technological characteristics shared between these assemblages suggest that both stone artifacts are attributable to Upper Paleolithic. In terms of the overall morphology shaped by grinding, the ground lithic rods are compared to bone rods from the Old World Upper Paleolithic and North American prehistoric records. Given the recognition that the ground lithic rods are analogous to morphologically comparable bone rods in North American archaeological record, I give a functional interpretation that the ground lithic rods were used for an "exemplar'' for manufacturing organic composite tools such as projectiles.

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