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Early Evolution of Primitive Angiosperms in Cretaceous

Research Project

Project/Area Number 09640827
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 系統・分類
Research InstitutionKAGAWA UNIVERSITY

Principal Investigator

TAKAHASHI Masamichi  Kagawa Univ.Professor, 農学部, 教授 (00154865)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI Masamichi  Kagawa Univ.Professor.
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 1998: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1997: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsAshizawa Formation / Futaba Group- / Cretaceous- / fossil flowers- / fossil plants- / Japan- / Kamikitaba assemblage / 双葉層群 / 炭化化石
Research Abstract

A preliminary description is provided of a new assemblage of plant fossils (the Kamikitaba mesofossil flora) from the Asamigawa Member of the Ashizawa Formation (lower Coniacian, Upper Cretaceous) exposed in Kamikitaba, Fukushima Prefecture, northeastern Honshu, Japan. The fossils are small, three-dimensional and charcoalified or lignitized (mesofossils) and yield exquisite structural details when studied with scanning electron microscopy. The Kamikitaba assemblage comprises the first record of this style of fossil plant preservation from the Cretaceous of eastern Asia. The flora complements and extends current knowledge of Cretaceous fossil plants from Japan and provides a basis for comparison with similar mesofossil assemblages from eastern North America and Europe. The fossil assemblage contains well-preserved angiosperm flowers, fruits, seeds, leaf fragments and wood, as well as shoots, leaves, pollen cones, cone scales and seeds of conifers. Extant taxa that can be recognized provisionally include : Lauraceae, Hamamelidaceae, Fagaceae, Cornales, Combretaceae, and probably Ericales, Magnoliaceae, Nymphaeales and Taxodiaceae. Leaf and rachis fragments of ferns, sporangia with in situ spores, and megaspores also document the presence of Selaginellaceae and Schizaeaceae.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] Takahashi, M.,Peter R.Crane and H.Ando.: "Fossil flowers and associated plant fossils from the Kamikitaba locality(Ashizawa Formation, lower Coniacian, Upper Cretaceous)of Northeast Japan." Jour.Plant Res.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takahashi, M.,P.R.Crane and H.Ando.: "Esgueiria futabaensis sp.nov.;a new angiosperm flower from the Upper Cretaceous(lower Coniacian)of northeastern Honshu, Japan." Paleontological Research.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takahashi, M.Peter, R.Crane, H.Ando: "Fossil flowers and associated plant fossils from the Kamikitaba locality (Ashizawa Formation, lower Coniacian, Upper Cretaceous) of Northeast Japan" Journal of Plant Research. (in press). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takahashi, M.Peter, R.Crane, H.Ando: "Esgueiria futabensis sp.nov., anew angiosperm flower from the Upper Cretaceous (lower Coniacian) of northeastern Honshu, Japan." Paleontological Research. (in press). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takahashi,M.,Peter R.Crane and H.Ando.: "Fossil flowers and associated plant fossils from the KamiKitaba locality (Ashizawa Formation,lower Coniacian,Upper Cretaceous) of Northeast Japan." Jour.Plant Res.

    • Related Report
      1998 Annual Research Report
  • [Publications] Takahashi,M.,P.R.Crane and H.Ando.: "Esgueiria futabaensis sp.nov.; a new angiosperm flower from the Upper.Cretaceous (lower Coniacian) of northeastern Honshu,Japan." Paleontological Research.

    • Related Report
      1998 Annual Research Report
  • [Publications] Takahashi,M.: "Palynological approaches to the origin and early diversification of antiosperms" K.Iwatsuki & P.Raven[eds.]Evolution and Diversification of Land Plants. 199-208 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Takahashi,M.: "Fossil Spores and Pollen grains of Cretaceous(Upper Campanian)from Sakhalin,Russia" J.Plant Res.110. 283-298 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Nowicke,J.W, Takahashi,M., Webster G.L.: "Pollen morphology,exine seructure and systematics of A only phoidoal(Euphor biacool)" Rev.Palaeobot.Paly.(in press). (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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