Terrestrial environmental changes reconstructed by non-vascular plant biomarkers across the Cenomanian/Turonian boundary in the Tomamae area, northern Hokkaido, Japan


Masashi Ikeda1, Ken Sawada1, Takuto Ando2, Hideto Nakamura3, Reishi Takashima4 and Hiroshi Nishi4, (1)Hokkaido University, Department of Earth and Planetary Sciences, Sapporo, Japan, (2)Hokkaido University, Sapporo, Japan, (3)Department of Geosciences, Graduate School of Science, Osaka City University, Osaka, Japan, (4)Tohoku University, Sendai, Japan