<国立科博専報>有珠10遺跡を中心とする北海道噴火湾沿岸地域出土の続縄文時代人永久歯の歯冠径

概要

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The human permanent teeth of Epi-Jomon Period (Esan Culture Phase) from Usu-10 Site on an islet in Funkawan Bay, Hokkaido, were measured. The least sample size was ten. Through comparisons with 16 other East Asian samples of different periods by the use of PENROSE's shape distance, it was found that the variation pattern in dental size of the Epi-Jomon people from the seaside region along Funkawan Bay including the Usu-10 remains was far more similar to that of the Jomon people from the same region than to those of the Jomon people from Honshu and of other Asian samples. The sample which was next closest to the Epi-Jomon people among the samples compared was the modern Ainu in Hokkaido. These facts suggest that the microevolutionary process from the Jomon age to the present in Hokkaido is a little different from that in Honshu or the Asian continent. In addition, it was confirmed that the dental variation patterns of the Epi-Jomon and Jomon people from the southern part of Hokkaido were very similar to those of modern hunter-gatherers like the Inuit, Australian Aborigine, San, etc., suggesting that dental similarity between populations does not necessarily imply phylogenetic affinity between them.