Morphometric Features of Femurs in the Okhotsk People

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  • オホーツク文化期人の大腿骨における計測的特徴
  • オホーツク ブンカキジン ノ ダイタイコツ ニ オケル ケイソクテキ トクチョウ

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Abstract

Skeletal femoral measurements were recorded for Okhotsk Cultural people (5–12 century) uncovered from northern and eastern Hokkaido, Japan, in order to clarify the regional differences among the two Okhotsk groups, and to find those specific features in comparison with the other ethnic groups in Hokkaido represented by Neolithic Jomon, Epi-Jomon and modern Ainu. The results demonstrated that the femurs of the eastern Okhotsk sample, mainly from the Moyoro Shell Mound site, are significantly larger in length of the shaft, thickness of the proximal shafts, diameters of the head and neck than those of the northern Okhotsk sample from the Ohmisaki and Hamanaka sites, and also than the Jomon/Epi-Jomon and Ainu femurs. Meanwhile, the northern Okhotsk people less differed in morphometric femoral features from the Jomon/Epi-Jomon and Ainu than the eastern Okhotsk sample did. Discriminant function analyses using these femoral measurements divided the two Okhotsk samples and Jomon/Ainu at high level of accuracies (>90%), with finding the difference in both the femoral size and proportion among the shaft length and/or thickness at various portions.<br>

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