2010 Fiscal Year Final Research Report
Research on the explosive evolution history of Radiolaria after the end Permian Mass extinction
| Project/Area Number |
20540452
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | Tohoku University |
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Principal Investigator |
SUZUKI Noritoshi Tohoku University, 大学院・理学研究科, 助教 (60312542)
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| Co-Investigator(Renkei-kenkyūsha) |
KAIHO Kunio 東北大学, 大学院・理学研究科, 教授 (00143082)
YAMAKITA Satoshi 宮崎大学, 教育文化学部, 准教授 (80210342)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 系統 / 進化 / 多様性 / 三畳紀 |
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| Research Abstract |
This research focused the explosive evolutionary history of radiolarian Nassellaria from the late Permian to the middle Triassic with geochemical evidences. Multisegmented Nassellaria, one of the diversified Radiolaria in the present ocean, was originated from the Triassocampe-lineage, and they diversified three or four major sub-lineages, and each lineage evolved to new genera like the genus Corum. In the late Permian, no serious mass extinction signals were recognized in radiolarian fauna, but significant unstable faunal shift was recognized. These events do not correspond to our geochemical data at this time, suggesting the presence of unknown but important paleoceanographic events in this geologic interval.
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Research Products
(45 results)
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[Journal Article] Early Triassic (Induan) Radiolaria and carbon-isotope ratios of a deep-sea sequence from Waiheke Island, North Island2011
Author(s)
Hori RS, Yamakita S, Ikehara M, Kodama K, Takemura A, Kamata Y, Suzuki N, Takahashi S, Sporli KB, Grant-Mackie JA.
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Journal Title
New Zealand. Palaeoworld. 20
Peer Reviewed
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[Presentation] ニュージーランド,ワイヘケ島の海洋底シークェンスにおけるペルム紀/三畳紀境界の検討その1:コノドント生層序2011
Author(s)
山北聡, 堀利栄, 相田吉昭, 竹村厚司, 小玉一人, 池原実, 鎌田祥仁, 鈴木紀毅, 高橋聡, Sporli KB, Grant-Mackie JA
Organizer
日本古生物学会第160回例会
Place of Presentation
高知大学(高知県)
Year and Date
2011-01-29
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[Presentation] ニュージーランド,ワイヘケ島の海洋底シークェンスにおけるペルム紀/三畳紀境界の検討その2:炭素同位対比変動および放散虫化石(予報)2011
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, Sporli KB, Grant-Mackie JA
Organizer
日本古生物学会第160回例会
Place of Presentation
高知大学(高知県)
Year and Date
2011-01-29
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[Presentation] ニュージーランド,アローロックスOruatemanu層のOlenekian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, Sporli KB, Campbell HJ
Organizer
日本古生物学会創立75周年記念行事および2010年年会
Place of Presentation
筑波大学(茨城県)
Year and Date
2010-06-13
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[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, Sporli KB
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(東京)
Year and Date
2010-01-06
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[Presentation] Induan (Lower Triassic) radiolarian fauna from Arrow Rocks, Northland, New Zealand. InterRad 122009
Author(s)
Takemura A, Aono R, Takemura S, Yamakita S, Kamata Y, Aita Y, Sakai T, Hori RS, Sakakibara M, Suzuki N, Takahashi S, Kodama K., Sporli KB, Campbell HJ
Organizer
The 12th Meeting of the International Association of Radiolarian Paleontologists
Place of Presentation
南京古生物研究所(中華人民共和国・南京)
Year and Date
2009-09-14
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[Presentation] Lower Triassic (Induan) radiolarian fossils and C-isotope excursion of a deep-sea sequence from Waiheke Island2009
Author(s)
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
Organizer
Northland, New Zealand
Place of Presentation
南京古生物研究所(中華人民共和国・南京)
Year and Date
2009-09-14
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[Remarks] ホームページ等
