The radiolarian faunal transition just after the Paleozoic/Mesozoic Boundary.

古生代/中生代边界之后的放射虫动物区系转变。

• 批准号: 21540484
• 负责人: TAKEMURA Atsushi
• 金额: $ 2.66万
• 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: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21540484/
• 关键词: 層位・古生物学; 化石; 放散虫化石; 古生代/中生代境界; 三畳紀; ニュージーランド; 古生代; 中生代境界; アローロックス; チャート層

Radiolarians were the principal plankton group within the Paleozoic and Mesozoic Ocean. The radiolarian fauna remarkably changes across the Paleozoic/Mesozoic boundary, when the biggest mass extinction occurred. Although the detail of the radiolarian faunal change had long been obscured, it had been clarified through the geological and paleontological survey of Arrow Rocks, New Zealand that many Permian radiolarians survived across the boundary. In this study, I extracted radiolarian assemblages from about fifteen earliest Triassic horizons in Arrow Rocks cherts. These radiolarian fauna was almost composed of Permian-type species, and changed gradually to Mesozoic-type fauna in Early Triassic time.

放射虫是古生代和中生代海洋中主要的浮游生物类群。放射虫动物群在古生代和中生代边界上发生了显著变化，这是最大规模灭绝发生的时间。虽然放射虫动物群变化的细节长期以来一直模糊不清，但通过对新西兰箭岩的地质和古生物学调查，已经澄清了许多二叠纪放射虫越过边界存活下来。在这项研究中，我从箭头岩燧石中提取了大约15个最早三叠纪层位的放射虫组合。这些放射虫动物群基本由二叠纪型组成，在早三叠世逐渐转变为中生代型。

项目成果

Lower Triassic(Induan)Radiolarian fossils and C-isotope excursion of a deep-sea sequence from Waiheke Island, North Island, New Zealand

新西兰北岛怀赫科岛的下三叠世（印度）放射虫化石和深海序列的 C 同位素偏移

• 发表时间: 2009
• 作者: Rie S.Hori;Satoshi Yamakita;Minoru Ikehara;Kazuo Kodama;Yoshiaki Aita;Toyosaburo Sakai;Atsushi Takemura;Yoshihito Kamata;Noritoshi Suzuki;Satoshi Takahashi;K.Bernhard Sporli;Jack A.Grant-Mackie
• 通讯作者: Jack A.Grant-Mackie

Lithostratigraphy and conodont biostratigraphy of Upper Permian to Lower Triassic ocean floor sequences in Japan and New Zealand, originally deposited in lowand southern middle latitudes in Pantharassa

日本和新西兰上二叠统至下三叠统海底序列的岩石地层学和牙形刺生物地层学，最初沉积在潘塔拉萨的低纬度和南部中纬度地区

• 发表时间: 2011
• 作者: Yamakita;S.;Takemura;A.;Hori;R.S.;Aita;Y.;Takahashi;S.;Kojima;S.;Kadota;N.;Kodama;K.;Ikehara;M.;Kamata;Y.;Suzuki;N.;Sporli;K.B.;Campbell;H.J.
• 通讯作者: H.J.

Genera systematics revision : Implica-tions for the stratigraphic ranges of Mesozoic families

属系统学修订:对中生代地层范围的影响

• 发表时间: 2009
• 作者: O' Dogherty;L.;Carter;E. S.;Dumitrica;P.;Gorican;S.;De Wever;P.;Bandini;A. N.;Baumgartner;P. O.;Hungerbuhler;A.;Matsuoka;A. and Takemura;A.
• 通讯作者: A.

Lower Triassic (Induan) radiolarian fossils and C-isotope excursion of a deep-sea sequence from Waiheke Island

怀赫科岛下三叠世（印度）放射虫化石和深海序列的 C 同位素偏移

• 发表时间: 2009
• 作者: Hori RS;Yamakita S;Ikehara M;Kodama K;Aita Y;Sakai T;Takemura A;Kamata Y;Suzuki N;Takahashi S;Sporli KR;Grant-Mackie J
• 通讯作者: Grant-Mackie J

Catalogue of Mesozoic radiolarian genera. INTERRAD XII

中生代放射虫属目录。

• 发表时间: 2009
• 作者: O' Dogherty;L.;Carter;E. S.;Dumitrica;P.;Gorican;S.;De Wever;P.;Bandini;A. N.;Baumgartner;P. O.;Hungerbuhler;A.;Matsuoka;A. and Takemura;A.
• 通讯作者: A.