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This study is carried out to establish the grouping method of the fossil foraminiferal fauna as the first step for the paleoecological work of the benthonic foraminiferal fauna, The ordinary methods i...n such fields have been based chiefly on the qualitative characteristics of the faunal assemblages up to now. In recent years, some statistical methods were introduced to divide the differentiated recent fauna objectively, but the application of these statistical methods for the fossil material have not been reported yet. Cluster analysis is applied in this study to recognize the differentiation of the fossil foraminiferal fauna. The formulas used in this study are MORISlTA's Index for the calculation of the similarity between samples and the SPEARMAN's sums of variable formula for the clustering and reclustering. Although both of the formulas were invented to analyse the living fauna, the present result shows that they are applicable for the fossil material. The result is harmonious with and more objective than those of the qualitative method on the Miyazaki Group, and affords the basis for the further ecological consideration.続きを見る
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Mendeley出力
20_01_p059