[B-PT05] Biotic History

Thu. May 30, 2019 1:45 PM - 3:15 PM 201A (2F)

convener:Isao Motoyama(Department of Earth and Environmental Sciences, Yamagata University), Takao Ubukata(Division of Geology & Mineralogy, Department of Earth & Planetary Sciences, Kyoto University), Kazuyoshi Moriya(Department of Earth Sciences, Faculty of Education and Integrated Arts and Sciences, Waseda University), Chairperson:Isao Motoyama, Takao Ubukata, Kazuyoshi Moriya

The Biotic History session covers all aspects of ancient life and the history of biosphere through the geologic time. The study of ancient life is essential for unveiling mysteries of our planet earth. It also provides evidence for evolution of oceans, continents and island arcs. Modern progress in this field has been enhanced by interdisciplinary collaboration with allied sciences, such as paleoceanography and evolutionary biology. Our session intends to be a hub of communication amongst all earth scientists studying the biosphere; we welcome biological and biogeochemical approaches toward the understanding of the history of life.

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1:45 PM - 2:00 PM

[BPT05-01] Cause of accelerated evolution of Earth’s life; four-layered underground robust bio-communities played a critical role for the accelerated genome evolution as a response of mass extinction

*Shigenori Maruyama¹, Akio Kanai², Issay Narumi³ (1.Earth-Life Science Institute, Tokyo Institute of Technology, 2.keio University, 3.Toyo University)

2:00 PM - 2:15 PM

[BPT05-02] Amino acid composition in molluscan shells and its relation to taxa and shell microstructure ~ Toward reconstruction of ancient trophic level using compound specific isotope analysis of amino acids ~

*Naoki Yugami¹, Akiko Goto², Robert Jenkins² (1.Graduate School of Natural Science & Technology. Kanazawa Univercity, 2.Institute of Science & Engineering . Kanazawa Univercity)

2:15 PM - 2:30 PM

[BPT05-03] Relation of shell form to rocking motion in planispiral cephalopods

*Takao Ubukata¹ (1.Division of Geology & Mineralogy, Department of Earth & Planetary Sciences, Kyoto University)

2:30 PM - 2:45 PM

[BPT05-04] Paleoenvironment aross the Meddle Eocene Climatic Optimum

Hiroki Masui¹, *Kazuyoshi Moriya¹ (1.Department of Earth Sciences, Faculty of Education and Integrated Arts and Sciences, Waseda University)

2:45 PM - 3:00 PM

[BPT05-05] Reconstruction of the North Pacific subtropical gyre from the Middle to Late Miocene as inferred from radiolarian assemblages

*Shin-ichi Kamikuri¹, Isao Motoyama², Taiki Sawada³ (1.Faculty of Education, Ibaraki University, 2.Faculty of Science, Yamagata University, 3.Japan Petroleum Exploration Co.,Ltd.)

3:00 PM - 3:15 PM

[BPT05-06] Fossilization processes of Pliocene tree fossils from the Yasu River, Shiga Prefecture, Japan: Organic geochemical approach

*Jinya Nakamura¹, Ken Sawada², Masashi A Ikeda¹, Hideto Nakamura³, Minoru Tsukagoshi⁴ (1.Graduate School of Science, Hokkaido University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 3.Faculty of Science, Osaka City Univerisity, 4.Osaka Museum of Natural History)

Session information