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Biodiversity recovery from the Late Paleozoic mass extinction in mid-latitude region

Research Project

Project/Area Number 16K05598
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Stratigraphy/Paleontology
Research InstitutionNational Museum of Nature and Science, Tokyo

Principal Investigator

Shigeta Yasunari  独立行政法人国立科学博物館, 地学研究部, グループ長 (30270408)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords化石 / 絶滅 / 回復 / 生物多様性 / 三畳紀 / 層位・古生物学 / 環境変動
Outline of Final Research Achievements

The geological survey of the Lower Triassic in South Primorye, Russian Far East reveals the following things: 1) Bellerophontid gastropods that survived the end of the Paleozoic mass extinction completely disappeared in the middle Smithian, 2) Ammonoid assemblages changed at the Smithian/Spathian boundary, 3) Crinoids and large bivalves flourished in the shallow waters in the early Spathian. These evidences provide an important key for understanding the Smithian/Spathian event and the biodiversity recovery from the Late Paleozoic mass extinction in mid-latitude region on the western side of the Panthalassa.

Academic Significance and Societal Importance of the Research Achievements

古生代最末期に起きた大量絶滅事件とその後の回復過程は、地球環境と生物の相互関係を理解する上で格好の研究材料である。これまで、当時の低緯度地域や高緯度地域における海洋環境や生物相については詳細に研究が行われてきたが、中緯度地域については研究の空白域となっていた。本研究では、ロシア極東地域の三畳紀前期の海洋生物相の解析により、中緯度地域における絶滅事件後の生物相の特性を明らかにし、生物多様性の回復の理解のための新たなデータを提供することができた。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (4 results)

All 2018 2017

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Acknowledgement Compliant: 1 results) Presentation (2 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] N and C Isotopic Compositions of the Lower Triassic of Southern Primorye and Reconstruction of Habitat Conditions of Marine Organisms after Mass Extinction at the End of the Permian2018

    • Author(s)
      Zakharov Y. D.、Horacek M.、Shigeta Y.、Popov A. M.、Maekawa T.
    • Journal Title

      Doklady Earth Sciences

      Volume: 478 Issue: 2 Pages: 161-165

    • DOI

      10.1134/s1028334x18020204

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Discovery of the early Spathian (late Olenekian, Early Triassic) ammonoid Tirolites in the Hiraiso Formation, South Kitakami Belt, Northeast Japan2017

    • Author(s)
      Yasunari Shigeta, Yasuhisa Nakajima
    • Journal Title

      Paleontological Research

      Volume: 21 Issue: 1 Pages: 37-43

    • DOI

      10.2517/2016pr017

    • NAID

      40021052314

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Morphology and osteohistology of new Early Triassic ichthyosauriform fossils from the Russian Far East2018

    • Author(s)
      Yasuhisa Nakajima, Yasunari Shigeta, Alexander Houssays, P. Martin Sander
    • Organizer
      5th International Paleontological Congress
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Bio- and chemo-stratigraphic indexes for global correlation of the Smithian-Spathian boundary in Vietnam and Japan2018

    • Author(s)
      Takumi Maekawa, Toshifumi Komatsu, Yasunari Shigeta, Dang Tran Huyen
    • Organizer
      5th International Paleontological Congress
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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