オーストラリア,ラクラン褶曲帯におけるオルドビス紀新世の放散虫化石の検討

Late Ordovician radiolarians from the Lachlan Fold Belt, Southeasten New South Wales, Austraha called the Taralga radiolarian fauna, consists of Entactionsphaera, Secuicollacta and undescribed forms. They are grouped into five genera and eight species. Among the Ordovician radiolarians reported, Entactinia subulata Webby and Blom is in common with the fauna from Nevada and Malongulli of Austraha, but other forms of the Taralga radiolaria differ from those of Nevada, Malongulli of Australia, and Estonia of Kasakhustan. A part of the Taralga radiolaria is briefly reported, and discussed morphology of Lower Paleozoic radiolarians.