北東太平洋における国際深海掘削計画（odp）1021 地点の中部および上部中新統から産出した放散虫化石

Abstract

The purpose of this study is to present microphotgraphs of all the encountered taxa of the middle to late Miocene age from Ocean Drilling Program (ODP) Site 1021 in the eastern North Pacific in order to analyze the species diversity of radiolarians. Totally 149 species or species groups of radiolarians were identified from Site 1021 in the eastern North Pacific. Micro-photographs have been illustrated in the 24 plates, and a new species, Lychnocanoma californica, is described.