Examination of Nonmetrical Characters of the Form of Innominate Bones from Pleistocene in Japan:Part I Description

概要

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The nonmetrical characters of the principal items defined in this study are observed and described on five innominates discovered from the Pleistocene deposits in Japan. They are compared with various fossil innominate casts and recent Japanese innominates. The character of each item is expressed by thesuccessive categories also defined in this study to enable objective comparisons and nonparametric statistics, which will be shown in Part II. Thegeneral features of the Japanese fossil innominates, except for the Akashi, suggest that they belong to the Pleistocene Sapiens stage.Theircharacteristics are as follows : the concavity of the iliac anterior interspinous border is variable but tends to be more or less deep ; theelevationof the vertical iliac buttress is moderate or traceable ; its root comes around the middle portion of the upper part of the acetabular brim;the supraacetabular fossa and the iliac sulcus are moderately developed ; the angle between the inner iliac and ischial surfaces is also moderate. It istentatively concluded that the Akashi innominate is in the Holocene Sapiens stage and probably modern.
日本人類学会の論文