Phylogeny and classification of Permian Radiolarians

四国中部秩父地体的磷酸盐结核和新西兰怀帕帕地体的石灰岩和燧石样品用于本研究，以澄清晚二叠世放射虫动物群的分类及其动物群组成。本研究的主要结果如下：1.利用扫描电子显微镜对晚二叠世阿尔拜拉动物的内部结构进行了观察。研究了二叠纪属Albaillella、Pseudoalbaillella、Follicucullus和Neoalbaillella的系统发育关系和分类.在秩父地体磷酸盐结核的动物群中观察到几个类群的未知放射虫。它们中的大多数可被归类为新属。由于难以观察内部结构，对这些群体的研究仍在继续.报告了怀帕帕地体北方中、晚二叠世放射虫化石，以及由几乎连续的玄武岩、石灰岩、层状硅质岩和硅质泥岩组成的阿罗岩的详细岩石地层学。中至晚二叠世放射虫出现在阿罗岩的石灰岩透镜和层状燧石中（Takemura等人，4.在阿罗岩的石灰石透镜中发现了保存完好的阿尔拜利亚类，包括两个新的属种Follicucullus，F.sphaericus和F.whangaroaensis（Takemura et al.，除此之外，早中三叠世放射虫还产于Arrow Rocks的硅质泥岩中，Arrow Rocks的黑色页岩单元可与二叠系/三叠系界线对比。

A phosphate nodule from Chichibu Terrane in central Shikoku and limestone and chert samples from the Waipapa Terrane, New Zealand were used in this research to clarify the taxonomy of Late Permian radiolarian fauna and their faunal composition. The results of this research are the follows :1. Observations of internal structures of Late Permian albaillellarians were made using scanning electron microscope. Phylogenetic relationships and classification of Permian genera Albaillella, Pseudoalbaillella, Follicucullus and Neoalbaillella are examinated.2. Unknown radiolarians of several groups were observed in the fauna from the phosphate nodule from Chichibu Terrane. Most of them can be classified as new genera. Because it is difficult to observe internal structures, the research of these groups is still continued.3. Middle to Late Permian radiolarians from the northern part of Waipapa Terrane were reported, as well as the detailed lithostratigraphy of Arrow Rocks composed of an almost continuous section of basalts with limestones, bedded cherts and siliceous mudstones. Middle to Late Permian radiolarians occurred in a limestone lens and bedded chert from Arrow Rocks (Takemura et al., in press).4. Well-preserved albaillellarians from the limestone lens in Arrow Rocks were described including two new species of Genus Follicucullus, F.sphaericus and F.whangaroaensis (Takemura et al., now submitting).Other than these results, Early to Middle Triassic radiolarians occurred in siliceous mudstones from Arrow Rocks, and black shale unit in Arrow Rocks can be correlated with Permian/Triassic boundary.