Phylogeny and classification of Permian Radiolarians

二叠纪放射虫的系统发育和分类

基本信息

批准号：
07640622
负责人：
TAKEMURA Atsushi
金额：
$ 1.09万
依托单位：
Hyogo University of Teacher Education
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

项目摘要

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.

在这项研究中，使用了新西兰Waipapa Terrane的Chichibu Terrane的磷酸盐结节，以及Libestone和Chert样品，以阐明最近二叠纪放射线杆菌动物群的分类法及其动物群的分类。这项研究的结果是：1。使用扫描电子显微镜对二叠纪晚期阿尔巴利亚人的内部结构进行观察。研究了二叠纪属阿尔巴利氏菌，伪阿尔贝拉氏菌，follicucullus和Neoalbailla的系统发育关系和分类。2。从奇奇布地层的磷酸盐结节中观察到了几组的未知放射性药物。他们中的大多数可以归类为新属。因为很难观察到内部结构，所以对这些群体的研究仍在继续。3。据报道，据报道，据报道，来自Waipapa地座北部的中二叠纪辐射型人，以及由几乎连续的玄武岩，石灰岩，床单和硅质的泥石组成的箭头岩石的详细岩石描绘。中二叠纪放射性药物发生在石灰石镜头和箭头岩石床中（Takemura等人，印刷中）.4。描述了箭岩中的石灰岩镜头的保存完好的Albaillalarians，其中包括两种新物种Follicucullus属，F.Sphaericus和F. Whangaroaensis（Takemura等人（Takemura et al。，现在）。在这些结果中，比这些结果更早于这些结果。二叠纪/三叠纪边界。