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Assessment of mode of disparity change across mass extinction events

Research Project

Project/Area Number 26400502
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Stratigraphy/Paleontology
Research InstitutionKyoto University

Principal Investigator

Ubukata Takao  京都大学, 理学研究科, 准教授 (00293598)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords異質性 / 形態的豊富度 / 形態空間 / アンモノイド / 大量絶滅 / 多様性変動 / 大量絶滅と回復
Outline of Final Research Achievements

To study change in morphological diversity of ammonoids, I propose a method to measure amount of the morphospace occupation which is robust with respect to sampling effort. I also focus on how drastically the pattern of morphospace occupation changes between the adjacent geochronological units. I applied the present method to the analysis of change in morphological diversity of ammonoids as well as their morphological turnover rates. As the results of the analysis, a prominent decrease of morphological diversity and high rates of morphological turnover were found at the end of the Guadalupian, while the morphological event at the end of the Permian was not greater than background levels. The present results suggest that the primary replacement of dominant ammonoid form around the end of the Paleozoic occurred associated with the end-Guadalupian event eight million years before the end-Permian crisis.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (20 results)

All 2017 2016 2015 2014

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (18 results)

  • [Journal Article] 古生物学的データの偏りと古生物多様性の補正:分類群豊富度から形態的異質性まで2016

    • Author(s)
      生形貴男
    • Journal Title

      化石

      Volume: 100 Pages: 29-43

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Late Cretaceous record of large soft-bodied coleoids based on lower jaw remains from Hokkaido, Japan.2015

    • Author(s)
      Kazushige Tanabe, Akihiro Misaki and Takao Ubukata
    • Journal Title

      Acta palaeontologica Polonica

      Volume: 60 Pages: 27-38

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] アンモノイドの外殻の比表面積の変遷2017

    • Author(s)
      生形貴男
    • Organizer
      日本古生物学会第166会例会
    • Place of Presentation
      早稲田大学(東京都・新宿区)
    • Year and Date
      2017-01-28
    • Related Report
      2016 Annual Research Report
  • [Presentation] 被覆率に基づく異質性の基準化2016

    • Author(s)
      生形貴男
    • Organizer
      日本古生物学会2016年年会
    • Place of Presentation
      日本大学(東京都・世田谷区)
    • Year and Date
      2016-09-11
    • Related Report
      2016 Annual Research Report
  • [Presentation] 古生物学試料における分類群網羅率の頑健性2016

    • Author(s)
      生形貴男
    • Organizer
      日本地球惑星科学連合2016年大会
    • Place of Presentation
      幕張メッセ(千葉県・千葉市)
    • Year and Date
      2016-05-25
    • Related Report
      2016 Annual Research Report
  • [Presentation] 化石記録の完全性の評価における分類群網羅率の適用範囲2016

    • Author(s)
      生形貴男
    • Organizer
      日本古生物学会第165会例会
    • Place of Presentation
      京都大学(京都府・京都市)
    • Year and Date
      2016-01-30
    • Related Report
      2015 Research-status Report
  • [Presentation] 分類学的組成の入れ替わりから見たアンモノイドの多様性変動2015

    • Author(s)
      生形貴男
    • Organizer
      日本地質学会第121年学術大会
    • Place of Presentation
      信州大学(長野県・長野市)
    • Year and Date
      2015-09-12
    • Related Report
      2015 Research-status Report
  • [Presentation] 大量絶滅事変における分類学的・形態学的入れ替わりの尺度2015

    • Author(s)
      生形貴男
    • Organizer
      日本進化学会2015年大会
    • Place of Presentation
      中央大学(東京都・特別区)
    • Year and Date
      2015-08-20
    • Related Report
      2015 Research-status Report
  • [Presentation] 統計的モデル選択による大量絶滅・回復様式の評価2015

    • Author(s)
      生形貴男
    • Organizer
      日本古生物学会2014年年会
    • Place of Presentation
      産業技術総合研究所(茨城県・つくば市)
    • Year and Date
      2015-06-27
    • Related Report
      2015 Research-status Report
  • [Presentation] 形態空間分布パターンと種‐個体数関係に基づく絶滅・回復イベントの様式の評価方法2015

    • Author(s)
      生形貴男
    • Organizer
      日本地球惑星科学連合2015年大会
    • Place of Presentation
      幕張メッセ(千葉県・千葉市)
    • Year and Date
      2015-05-24
    • Related Report
      2015 Research-status Report
  • [Presentation] 地質年代境界における形態的回転の評価法2015

    • Author(s)
      生形貴男
    • Organizer
      日本地球惑星科学連合2015年大会
    • Place of Presentation
      幕張メッセ(千葉県・千葉市)
    • Year and Date
      2015-05-24
    • Related Report
      2015 Research-status Report
  • [Presentation] 異質性変動解析における形態的回転率の尺度2015

    • Author(s)
      生形貴男
    • Organizer
      日本古生物学会第164会例会
    • Place of Presentation
      豊橋市自然史博物館(愛知県)
    • Year and Date
      2015-01-31
    • Related Report
      2014 Research-status Report
  • [Presentation] Great ontogenetic variation in shell form with minimum modification of aperture map in ammonoids2014

    • Author(s)
      Takao Ubukata
    • Organizer
      4th International Palaeontological Congress
    • Place of Presentation
      Shelaton Mendoza Hotel (Argentina)
    • Year and Date
      2014-09-30
    • Related Report
      2014 Research-status Report
  • [Presentation] 採集者バイアスが標本レベルの多様性評価に及ぼす影響2014

    • Author(s)
      生形貴男・山下修平
    • Organizer
      日本地質学会第120年学術大会
    • Place of Presentation
      鹿児島大学(鹿児島県)
    • Year and Date
      2014-09-13
    • Related Report
      2014 Research-status Report
  • [Presentation] Relationship between ontogenetic change in shell shape and aperture map in ammonoids2014

    • Author(s)
      Takao Ubukata
    • Organizer
      9th International Symposium on Cephalopods: Present and Past
    • Place of Presentation
      Universitat Zurich (Switzerland)
    • Year and Date
      2014-09-07
    • Related Report
      2014 Research-status Report
  • [Presentation] 形態空間における分布の偏りの尺度2014

    • Author(s)
      生形貴男・道林克禎
    • Organizer
      日本古生物学会2014年年会
    • Place of Presentation
      九州大学(福岡県)
    • Year and Date
      2014-06-28
    • Related Report
      2014 Research-status Report
  • [Presentation] 貝殻真珠構造の結晶方位解析2014

    • Author(s)
      生形貴男
    • Organizer
      第16回マリンバイオテクノロジー学会大会
    • Place of Presentation
      三重大学(三重県)
    • Year and Date
      2014-06-01
    • Related Report
      2014 Research-status Report
  • [Presentation] 古生物多様性評価に対する地質年代単元の長さの影響2014

    • Author(s)
      生形貴男
    • Organizer
      日本地球惑星科学連合2014年大会
    • Place of Presentation
      パシフィコ横浜(神奈川県)
    • Year and Date
      2014-05-02
    • Related Report
      2014 Research-status Report
  • [Presentation] 種毎の産出個体数に基づく多様性変動の評価:白亜系蝦夷層群産アンモノイドの例2014

    • Author(s)
      山下修平・生形貴男
    • Organizer
      日本地球惑星科学連合2014年大会
    • Place of Presentation
      パシフィコ横浜(神奈川県)
    • Year and Date
      2014-05-02
    • Related Report
      2014 Research-status Report
  • [Presentation] 形態的非類似度と形態的豊富度の比較2014

    • Author(s)
      生形貴男
    • Organizer
      日本地球惑星科学連合2014年大会
    • Place of Presentation
      パシフィコ横浜(神奈川県)
    • Year and Date
      2014-04-28
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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