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Evolutionary history of marine mollusks in warm periods

Research Project

Project/Area Number 21740369
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Stratigraphy/Paleontology
Research InstitutionYokohama National University

Principal Investigator

WANI Ryoji  横浜国立大学, 環境情報研究院, 准教授 (70508580)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsアンモナイト / オウムガイ / 温暖期 / 白亜紀 / 軟体動物化石
Research Abstract

Based on fossil specimens of mollusks(especially ammonoids and nautiloids), their evolutionary history of diversity and hatchling sizes was analyzed. The hatchling sizes in nautiloids show no change across the end-Cretaceous mass extinction. The analyses of hatchling sizes during Paleozoic and Mesozoic demonstrated that the hatchling sizes increased from Paleozoic toward Mesozoic, suggesting that sympatric speciation was a plausible dominant process of their macroevolution.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (28 results)

All 2012 2011 2010 2009 Other

All Journal Article (23 results) (of which Peer Reviewed: 13 results) Presentation (5 results)

  • [Journal Article] Variable growth modes in Late Cretaceous ammonoids : implications for diverse early life histories2012

    • Author(s)
      Arai, K. and Wani, R.
    • Journal Title

      Journal of Paleontology

      Volume: vol.86 Issue: 2 Pages: 258-267

    • DOI

      10.1666/11-068.1

    • Related Report
      2011 Final Research Report
  • [Journal Article] Preferential predatory peeling : ammonoid vs. nautiloid shells from the Upper Carboniferous of Texas2012

    • Author(s)
      Wani, R., Jenkins, R. G., and Mapes, R. H.
    • Journal Title

      Geobios

      Volume: vol.45 Issue: 1 Pages: 129-137

    • DOI

      10.1016/j.geobios.2011.11.007

    • Related Report
      2011 Final Research Report
  • [Journal Article] Old and sticky. adhesive mechanisms in the living fossil Nautilus pompilius(Mollusca, Cephalopoda)2012

    • Author(s)
      von Byern, J., Wani, R., Schwaha, T., and Cyran, N.
    • Journal Title

      Zoology

      Volume: vol.115 Issue: 1 Pages: 1-11

    • DOI

      10.1016/j.zool.2011.08.002

    • Related Report
      2011 Final Research Report
  • [Journal Article] Old and sticky-adhesive mechanisms in the living fossil Nautilus pompilius (Mollusca, Cephalopoda)2012

    • Author(s)
      von Byern, J., et al
    • Journal Title

      Zoology

      Volume: 115 Pages: 1-11

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Preferential predatory peeling : ammonoid vs. nautiloid shells from the Upper Carboniferous of Texas, USA2012

    • Author(s)
      Wani, et al
    • Journal Title

      Geobios

      Volume: 45 Pages: 129-137

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Variable growth modes in Late Cretaceous ammonoids : implications for diverse early life histories2012

    • Author(s)
      Arai, K., Wani, R.
    • Journal Title

      Journal of Paleontology

      Volume: 86 Pages: 258-267

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Different modes of migration within Late Cretaceous ammonoids in northwestern Hokkaido, Japan : evidence from the analyses of shell whorls2012

    • Author(s)
      Ikeda, Y., Wani, R.
    • Journal Title

      Journal of Paleontology

      Volume: 86(印刷中)

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sympatric speciation drove the macroevolution of fossil cephalopods2011

    • Author(s)
      Wani, R.
    • Journal Title

      Geology

      Volume: vol.39 Issue: 11 Pages: 1079-1082

    • DOI

      10.1130/g32317.1

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Journal Article] Large hatchling size in Cretaceous nautiloids persists across the end-Cretaceous mass extinction : new data of Hercoglossidae hatchlings2011

    • Author(s)
      Wani, R., Kurihara, K., and Ayyasami, K.
    • Journal Title

      Cretaceous Research

      Volume: vol.32 Issue: 5 Pages: 618-622

    • DOI

      10.1016/j.cretres.2011.01.001

    • Related Report
      2011 Final Research Report
  • [Journal Article] Intraspecific variation of hatchling size in Late Cretaceous ammonoids from Hokkaido, Japan : implication for planktic duration at early ontogenetic stage2011

    • Author(s)
      Tajika, A. and Wani, R.
    • Journal Title

      Lethaia

      Volume: vol.44 Issue: 3 Pages: 287-298

    • DOI

      10.1111/j.1502-3931.2010.00242.x

    • Related Report
      2011 Final Research Report
  • [Journal Article] Permanent El Nino during the Pliocene warm period not supported by coral evidence2011

    • Author(s)
      Watanabe, T., A.Suzuki, S.Minobe, T.Kawashima, K.Kameo, K.Minoshima, Y.M.Aguilar, R.Wani, H.Kawahata, K.Sowa, T.Nagai, T.Kase
    • Journal Title

      Nature

      Volume: 471 Issue: 7337 Pages: 209-211

    • DOI

      10.1038/nature09777

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Intraspecific variation of hatchling size in Late Cretaceous ammonoids from Hokkaido, Japan : implication for planktic duration at early ontogenetic stage2011

    • Author(s)
      Tajika, A., Wani, R.
    • Journal Title

      Lethaia

      Volume: 44 Pages: 287-298

    • Related Report
      2011 Annual Research Report 2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Large hatchling size in Cretaceous nautiloids persists across the end-Cretaceous mass extinction : new data of Hercoglossidae hatchlings2011

    • Author(s)
      Wani, R., et al
    • Journal Title

      Cretaceous Research

      Volume: 32 Pages: 618-622

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Permanent El Nino during the Pliocene warm period not supported by coral evidence2011

    • Author(s)
      Watanabe, T., et al.
    • Journal Title

      Nature

      Volume: 471 Pages: 209-211

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Large hatchling size in Cretaceous nautiloids persists across the end-Cretaceous mass extinction : new data of Hercoglossidae hatchlings2011

    • Author(s)
      Wani, R., et al.
    • Journal Title

      Cretaceous Research

      Volume: (印刷中)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Conservative evolution in nautiloid shell morphology : evidence from the Pennsylvanian nautiloid Metacoceras mcchesneyi from Ohio, USA.2010

    • Author(s)
      Wani, R. and Mapes, R. H.
    • Journal Title

      Journal of Paleontology

      Volume: vol.84 Issue: 3 Pages: 477-492

    • DOI

      10.1666/09-158.1

    • Related Report
      2011 Final Research Report
  • [Journal Article] Conservative evolution in nautiloid shell morphology : evidence from the Pennsylvanian nautiloid Metacoceras mcchesneyi from Ohio, USA2010

    • Author(s)
      Wani, R., Mapes, R.H.
    • Journal Title

      Journal of Paleontology

      Volume: 84 Pages: 477-492

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In situ Calyptogena colonies from Pliocene back-arc basin fills in Leyte Island, Philippines2010

    • Author(s)
      Majima, R., et al.
    • Journal Title

      Journal of Geological Society of Japan

      Volume: 116

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Conservative evolution in nautiloid shell morphology : evidence from the Pennsylvanian nautiloid Metacoceras mcchesneyi from Ohio, USA2010

    • Author(s)
      Wani, R., Mapes, R.H.
    • Journal Title

      Journal of Paleontology (印刷中)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ontogenetic change and intra-specific variation of shell morphology in the Cretaceous nautiloid(Cephalopoda, Mollusca) Eutrephoceras clementinum(d' Orbigny, 1840) from the Ariyalur area2009

    • Author(s)
      Wani, R. and Ayyasami, K.
    • Journal Title

      Journal of Paleontology

      Volume: vol.83 Issue: 3 Pages: 365-378

    • DOI

      10.1666/08-119.1

    • Related Report
      2011 Final Research Report
  • [Journal Article] Ontogenetic change and intra-specific variation of shell morphology in the Cretaceous nautiloid (Cephalopoda, Mollusca) Eutrephoceras clementinum (d'Orbigny, 1840) from the Ariyalur area, southern India2009

    • Author(s)
      Wani, R., Ayyasami, K.
    • Journal Title

      Journal of Paleontology 83

      Pages: 365-378

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Different modes of migration within Late Cretaceous ammonoids in northwestern Hokkaido, Japan : evidence from the analyses of shell whorls

    • Author(s)
      Ikeda, Y. and Wani, R.
    • Journal Title

      Journal of Paleontology

      Volume: vol.86(in press)

    • Related Report
      2011 Final Research Report
  • [Journal Article] In situ Calyptogena colonies from Pliocene back-arc basin fills in Leyte Island

    • Author(s)
      Majima, R., Jenkins, R. G., Kase, T., Aguilar, Y. M., Nanjo, T., Wani, R., Wada, H., Fernando, A. G. S., and Hayashi, H.
    • Journal Title

      Journal of Geological Society of Japan

      Volume: vol.116

    • Related Report
      2011 Final Research Report
  • [Presentation] Preferential peeling : ammonoid versus nautiloid shells from the Upper Carboniferous of Texas, USA2010

    • Author(s)
      Wani, R., Mapes, R.H.
    • Organizer
      Eighth International Symposium, Cephalopods-Present & Past
    • Place of Presentation
      University of Burgundy, Dijon, France
    • Year and Date
      2010-09-01
    • Related Report
      2010 Annual Research Report
  • [Presentation] Preferential peeling : ammonoid versus nautiloid shells from the Upper Carboniferous of Texas, USA2010

    • Author(s)
      Wani, R. and Mapes, R. H.
    • Organizer
      Eighth International Symposium, Cephalopods. Present & Past
    • Place of Presentation
      Dijon France
    • Related Report
      2011 Final Research Report
  • [Presentation] 石炭紀後期のオウムガイMetacocerasの成長様式2010

    • Author(s)
      和仁良二・Mapes, R. H.
    • Organizer
      日本古生物学会2010年年会
    • Place of Presentation
      つくば市
    • Related Report
      2011 Final Research Report
  • [Presentation] Huge hatchling size in Late Cretaceous nautiloids persists across the K/T boundary to modern nautiloids2009

    • Author(s)
      Wani, R., Kurihara, K., Ayyasami, K.
    • Organizer
      8th International Symposium on the Cretaceous System
    • Place of Presentation
      Plymouth, United Kingdom
    • Year and Date
      2009-09-08
    • Related Report
      2009 Annual Research Report
  • [Presentation] Huge hatchling size in Late Cretaceous nautiloids persists across the K/T boundary to modern nautiloids2009

    • Author(s)
      Wani, R., Kurihara, K., and Ayyasami, K.
    • Organizer
      8th International Symposium on the Cretaceous System. Plymouth
    • Place of Presentation
      United Kingdom
    • Related Report
      2011 Final Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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