Systematics and biostratigraphy of the superfamily Archaediscacea (Carboniferous Foraminifer)

古生菌总科（石炭有孔虫）的系统学和生物地层学

基本信息

批准号：
07640620
负责人：
UENO Katsumi
金额：
$ 1.54万
依托单位：
University of Tsukuba
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

In the Japanese Carboniferous, the following archaediscacean genera are recognized : Viseidiscus, Planoarchaediscus, Archaediscus, Paraarchaediscus, Planospirodiscus, Neoarchaediscus, and Asteroarchaediscus. Archaediscacean faunal changes have been observed at two horizons close to the V3b/V3c and Mid-Carboniferous boundaries. Another faunal change among aechaediscaceans is presumed at the Middle/Upper Visean boundary according to the data from central Iran and several references. The first aechaediscacean fauna which was flourished during the Early and Middle Visean includes the subfamilies planoarchaediscinae and kasachstanodiscinae such as Viseidiscus, Planoarchaediscus, Glomodiscus, and Uralodiscus ; the second one observed in the Upper Visean is composed mainly of Archaediscus and Paraarchaediscus as well as several earlier archaediscascan genera mentioned above ; the third one thriving in the latest Visean and Serpukhovian consists of Neoarchaediscus and Asteroarchaediscus togeth … More er with Paraarchaediscus, Archaediscus, and Planospirodiscus. In Bashkirian and Moscovian time, few archaediscaceans belonging to Archaediscus, Neoarchaediscus, Asteroarchaediscus, and others were observed.Most of the archaedicacean genera were cosmopolitan during Visean and early Serpukhovian time. In late Serpulhovian and later, some genera such as Eosigmoilina and Brenckleina having sigmoidal coiling tend to have paleobiogeographically restricted distribution. These genera are very rare in the Eastem Tethys and Panthalassa provinces (no representative of these genera has been reported in the Japanese Carboniferous). Moreover, archaediscacean occurrence becomes sparse in Bashkirian and later. During that time, their distribution tend to be restricted in and around the Russian Platform. These are caused by the reduction and closure of the Circum-equatrial Seaway between Laurasia and Gondwana Continents occurred. in the late Serpukhovian time (formation of the Pangea), which enabled free interchange among the shallow-marine tropical and subtropical faunas in the equatrial zone. It has resulted in controlling the distribution and migration of the shallow-marine, equatrial faunas, and in increasing their provincialism. Less

在日本石炭纪中，认可以下古细菌属：Visediscus，Planoarchaediscus，Paraarchaediscus，Planosospirodiscus，Neoarchaediscus和Asteroarchaediscus。在靠近V3B/V3C和中碳纤维边界的两个范围内观察到了古细菌动物的变化。根据伊朗中部的数据和几个参考文献，在中部/上维斯尼亚边界上介绍了Aechaediscaceans之间的另一个动物变化。在维斯尼亚早期和中期荧光的第一个Aechaediscean动物群包括planearchaediscinae和Kasachstanodiscinae，例如Visediscus，PlanarchaeDiscus，glomoddiscus，glomoddiscus和uralodiscus；在维斯尼亚上部观察到的第二个主要是由古细胞和帕拉纳奇学士组成的，以及上面提到的几个先前的Archaediscan属。在最新的维斯尼亚人和Serpukhovian中蓬勃发展的第三个是由Neoarchaediscus和Asteroarchaediscus组成的……与Paraarchaediscus，Archaediscus和Planosospirodiscus在一起。在Bashkirian和Moscovian时代，很少有人观察到属于Archaediscus，Neoarchaediscus，Asteroarchaediscus和其他人的古细菌。在晚期Serpukhovian和后来的一些属，例如Eosigmoilina和Brenckleina具有Sigmoidal Coiling的属，往往具有古地理的分布。这些属在东部特提斯和泛阿拉萨省提供商中非常罕见（在日本石炭纪尚未报道这些属）。此外，发生古细菌的发生在Bashkirian及其后来变得稀疏。在此期间，它们的分布往往会受到俄罗斯平台和周围的限制。这些是由于劳拉西亚和冈瓦纳大陆之间周围海道的减少和关闭而引起的。在晚期的Serpukhovian时间（Pangea的形成），这使浅海热带和亚热带在相等区域的浅海群之间进行了自由互换。它导致控制了浅海，相等的动物群的分布和迁移，并增加了其省主义。较少的