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  • Takashi Hasegawa, Lisa M. Pratt, +4 authors Kazuhiko Uemura
  • Geology
  • 2004 (First Published: 2 December 2004)
  • Abstract Time-stratigraphic patterns of stable carbon isotopic ratios recorded in terrestrial organic matter from Cenomanian–Maastrichtian successions for the Russian Far East can be correlated toContinue Reading
  • Gang Li, Hisao Ando, +5 authors Niiden Ichinnorov
  • Geology
  • 2014 (First Published: 3 July 2014)
  • Two spinicaudatan species, Triglypta eedemtensis Li sp. nov. and Dundgobiestheria mandalgobiensis Li gen. et sp. nov., are described on the basis of scanning electron microscopy (SEM) imaging ofContinue Reading
    イノセラムス化石帯区分は上部白亜系の年代層序決定の手法として重要であるが,近年,本邦蝦夷層群において微化石との間に指標する年代区分に不一致が指摘されている.本論はイノセラムス化石帯に対応する炭素同位体比曲線を報告する.北海道大夕張・古丹別両地域のTuronian中部~Santonianの炭素同位体比曲線はInoceramus hobetsensis帯では負方向へのシフトを見せ,I.Continue Reading