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

2011 Fiscal Year Final Research Report

• Project/Area Number: 21540484
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Stratigraphy/Paleontology
• Research Institution: Hyogo University of Teacher Education
• Principal Investigator: TAKEMURA Atsushi 兵庫教育大学, 学校教育研究科, 教授 (90192632)
• Project Period (FY): 2009 – 2011
• Keywords: 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

Research Abstract

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.

Research Products

• [Journal Article] Early Triassic(Induan) Radiolaria and carbon-isotope ratios of a deep-sea sequence from Waiheke Island (2011)
  • Author(s): Hori, S. R., Yamakita, S. Ikehara, M., Kodama, K., Aita, Y., Sakai, T., Takemura, A., Kamata, Y., Suzuki, N., Takahashi, S., Sporli, K. B., Grant-Mackie, J. A.
  • Journal Title: Palaeoworld Volume: 20巻 Pages: 166-178
  • DOI: DOI:10.1016/j.palwor.2011.02.001
  • Peer Reviewed
• [Journal Article] Catalogue of Mesozoic radiolarian genera (2009)
  • Author(s): O' Dogherty, L., Carter, E. S., Dumitrica, P., Gorican, S., De Wever, P., Hungerbuhler, A., Bandini, A. N. and Takemura, A.
  • Journal Title: Triassic. Geodiversitas Volume: 31巻 Pages: 213-270
  • Peer Reviewed
• [Presentation] An ocean plate stratigraphy and endemic radiolarian faunas in the Triassic and Jurassic sequences (2012)
  • Author(s): Aita, Y., Takemura, A., Hori, R. S., Yamakita, S., Takahashi, S., Campbell H. J. & Sporli, K. B.
  • Organizer: 13th InterRad, A conference on Fossil and Recent Radiolarians
  • Place of Presentation: Cadiz, Spain
  • Year and Date: 2012-03-26
• [Presentation] Uppermost Permian to Lower Triassic ocean floor sequences in Japan and New Zealand (2012)
  • Author(s): Yamakita, S., Takemura, A., Hori, R. S., Aita, Y., Takahashi, S., Kojima, S., Kamata, Y., Suzuki, N., Sporli, K. B. & Campbell, H. J.
  • Organizer: 13th InterRad, A conference on Fossil and Recent Radiolarians
  • Place of Presentation: Cadiz, Spain
  • Year and Date: 2012-03-26
• [Presentation] The Induan(Early Triassic) radiolarian faunal transition above the P/T boundary at Arrow Rocks (2012)
  • Author(s): Takemura, A., Komori, H., Aono, R., Yamakita, S., Kamata, Y., Hori, R. S., Aita, Y., Spo rli, K. B. & Campbell, H. J.
  • Organizer: 13th InterRad, A conference on Fossil and Recent Radiolarians
  • Place of Presentation: Cadiz, Spain
  • Year and Date: 2012-03-26
• [Presentation] Late Triassic(Norian. Rhaetian) radiolarians of deep-sea sedimentary rocks from the Waipapa terrane (2012)
  • Author(s): Hori, R. S., Ohshiro, T., Aita, Y., Sakai, T., Takemura, A., Kodama, K. & Sporli, K. B.
  • Organizer: 13th InterRad, A conference on Fossil and Recent Radiolarians
  • Place of Presentation: Cadiz, Spain
  • Year and Date: 2012-03-26
• [Presentation] Permian-Triassic Boundary Sequences in New Zealand (2011)
  • Author(s): Aita, Y., Campbell, H. J., Grant-Mackie, J. A., Hori, R. S., Sporli, K. B., Takahashi, S., Takemura, A. and Yamakita, S.
  • Organizer: Geosciences 2011 Conference
  • Place of Presentation: Nelson, New Zealand
  • Year and Date: 2011-11-30
• [Presentation] ニュージーランド北島アローロックスにおける古生代/中生代境界直後の放散虫群集の変遷 (2011)
  • Author(s): 竹村厚司・小森はる奈・山北聡・鎌田祥仁・相田吉昭・堀利栄・高橋聡・池田昌之・K. Bernhard Sporli・Hamish J. Campbell
  • Organizer: 第11回放散虫研究集会
  • Place of Presentation: 愛媛大学
  • Year and Date: 2011-10-29
• [Presentation] Sulfur isotope profiles in the pelagic Panthalassic deep sea during the Permian-Triassic transition (2011)
  • Author(s): Takahashi, S., Kaiho, K., Hori, R. S., Gorjan, P., Watanabe, T., Yamakita, S., Aita, Y., Takemura, A., Sporli, K. B., Kakegawa, T., and Oba, M.
  • Organizer: 第11回放散虫研究集会
  • Place of Presentation: 愛媛大学
  • Year and Date: 2011-10-29
• [Presentation] ニュージーランド北島アローロックスにおける古生代/中生代境界直後の放散虫群集の変遷 (2011)
  • Author(s): 竹村厚司・小森はる奈・山北聡・鎌田祥仁・相田吉昭・堀利栄・高橋聡・池田昌之・K. Bernhard Sporli・Hamish J. Campbell
  • Organizer: 日本地質学会第118年学術大会
  • Place of Presentation: 茨城大学
  • Year and Date: 2011-09-11
• [Presentation] Induan(Lower Triassic) radiolarians from Arrow Rocks (2011)
  • Author(s): Takemura, A., Yamakita, S., Komori, H., Aono, R., Hori, R. S., Aita, Y., Kamata, Y., Takahashi, S., Ikeda, M., Takemura, S., Sporli, K. B., and Campbell, H. J.
  • Organizer: The 7th International Congress on the Carboniferous and Permian
  • Place of Presentation: Australia
  • Year and Date: 2011-07-07
• [Presentation] Lithostratigraphy and conodont biostratigraphy of Upper Permian to Lower Triassic ocean floor sequences in Japan and New Zealand (2011)
  • Author(s): 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., and Campbell, H. J.
  • Organizer: The 7th International Congress on the Carboniferous and Permian
  • Place of Presentation: Australia
  • Year and Date: 2011-07-07
• [Presentation] ニュージーランド,アローロックス南岸ARFセクションのInduan(三畳紀前期)放散虫化石群集 (2011)
  • Author(s): 小森はる奈・竹村厚司・山北聡・相田吉昭・堀利栄・鎌田祥仁・高橋聡・池田昌之・K. Bernhard Sporli・Hamish J. Campbell
  • Organizer: 日本古生物学会第160回例会
  • Place of Presentation: 高知大学
  • Year and Date: 2011-01-29
• [Presentation] ニュージーランド,アローロックス南岸ARFセクションのInduanコノドント生層序 (2011)
  • Author(s): 山北聡・竹村厚司・小森はる奈・相田吉昭・酒井豊三郎・堀利栄・小玉一人・鎌田祥仁・鈴木紀毅・高橋聡・K. Bernhard Sporli・Hamish J. Campbell
  • Organizer: 日本古生物学会第160回例会
  • Place of Presentation: 高知大学
  • Year and Date: 2011-01-29
• [Presentation] ニュージーランド・ワイパパ帯下部三畳系層状チャートにおける古海洋環境イベントの解析 (2010)
  • Author(s): 堀利栄・小玉一人・池原実・山北聡・相田吉昭・竹村厚司・鎌田祥仁・鈴木紀毅・高橋聡・K. Bernhard Sporli・Jack A. Grant-Mackie
  • Organizer: 日本地質学会第117年学術大会
  • Place of Presentation: 富山大学
  • Year and Date: 2010-09-18
• [Presentation] ニュージーランド,アローロックスOruatemanu層のSmithian-Spathianコノドント生層序 (2010)
  • Author(s): 山北聡・松本鉄平・前山尭之・竹村厚司・小森はる奈・相田吉昭・酒井豊三郎・藤口匠吾・堀利栄・小玉一人・鎌田祥仁・鈴木紀毅・高橋聡・池田昌之・K. Bernhard Sporli・Hamish J. Campbell
  • Organizer: 日本古生物学会2010年年会
  • Place of Presentation: 筑波大学
  • Year and Date: 2010-06-13
• [Presentation] ニュージーランド深海堆積物における三畳紀古世海洋環境イベントの解析 (2010)
  • Author(s): 堀利栄・小玉一人・池原実・山北聡・相田吉昭・酒井豊三郎・竹村厚司・鎌田祥仁・鈴木紀毅・高橋聡・K. Bernhard Sporli
  • Organizer: 高知大学海洋コア共同利用発表会
  • Place of Presentation: 東京大学海洋研究所
  • Year and Date: 2010-01-06
• [Presentation] Lower Triassic(Induan) Radiolarian fossils and C-isotope excursion of a deep-sea sequence from Waiheke Island (2009)
  • Author(s): Hori, S. R., Yamakita, S., Ikehara, M., Kodama, K., Aita, Y., Sakai, T., Takemura, A., Kamata, Y., Suzuki, N., Takahashi, S., Sporli, K. B. and Grant-Mackie, J. A.
  • Organizer: The 12th Meeting of the International Association of Radiolarian Paleontol-ogists
  • Place of Presentation: Nanjing, China
  • Year and Date: 2009-09-17
• [Presentation] Catalogue of Mesozoic radiolarian genera. INTERRAD XII (2009)
  • Author(s): 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.
  • Organizer: The 12th Meeting of the International Associa-tion of Radiolarian Paleontologists
  • Place of Presentation: Nanjing, China
  • Year and Date: 2009-09-17
• [Presentation] Genera systematics revision : Implica-tions for the stratigraphic ranges of Mesozoic families (2009)
  • Author(s): 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.
  • Organizer: The 12th Meeting of the International Association of Radiolarian Paleontologists
  • Place of Presentation: Nanjing, China
  • Year and Date: 2009-09-17
• [Presentation] Induan(Lower Triassic) radiolarian fauna from Arrow Rocks (2009)
  • Author(s): Takemura, A., Aono, R., Takemura, S., Yamakita, S., Kamata, Y., Aita, Y., Sakai, T., Hori, S. R., Sakakibara, M., Suzuki, N., Takahashi, S., Kodama, K., Sporli, K. B., and Campbell, H. J.
  • Organizer: The 12th Meeting of the International Association of Radiolarian Paleontologists
  • Place of Presentation: Nanjing, China
  • Year and Date: 2009-09-15