[B-PT05] Biotic History

convener:Isao Motoyama(Faculty of Science, 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)

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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[BPT05-01] Adaptive evolution of marine cyanobacteria to the climate in the Neoproterozoic inferred from ancestral proteins

*Nao Masuda¹, Mariko Harada², Sota Yagi³, Ryutaro Furukawa⁴, Akihiko Yamagishi⁵, Shin-ichi Yokobori⁵ (1.Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 2.Faculty of Life and Environmental Sciences, University of Tsukuba, 3.Center for Biosystems Dynamics Research, RIKEN, 4.Faculty of Human Sciences, Waseda University, 5.Department of Applied Life Sciences, Tokyo University of Pharmacy and Life Sciences)

[BPT05-02] Ontogenetic transformations and re-interpretation of Ediacaran Trilobozoa

*Maria Zakrevskaya¹, Andrey Ivantsov¹ (1.Paleontological Institute of the Russian Academy of Sciences, Moscow, Russia)

[BPT05-03] Natural assemblages of the platform-type conodont in lowermost Triassic deep-sea black claystone from northeastern Japan, with probable soft-tissue impressions

*Satoshi Takahashi¹, Satoshi Yamakita², Noritoshi Suzuki³ (1.Department of Earth and Planetary Science, University of Tokyo, 2.Department of Earth Science, Faculty of Culture, Miyazaki University, 3.Institute of Geology and Paleontology, Graduate school of Tohoku University)

[BPT05-04] Tephrochronological study of the Yezo Group (uppermost Albiane-basal Campanian) in Hokkaido, Japan

*Hiroshi Nishi¹, Reishi Takashima¹, Keiichi Hayashi², Kuwabara Sato², Yuji Orihashi³, Toshiro Yamanaka⁴ (1.The Center for Academic Resources and Archives, The Tohoku Museum Tohoku University, 2.Geological Survey of Hokkaido, 3.Hirosaki University, 4.Tokyo University of Marine Science and Technology)

[BPT05-05] Molecular mechanism which controls the shell microstructure depending on environmental changes in the Japanese pearl oyster

*Kei Sato¹, Davin H.E. Setiamarga², Hiroshi Yonemitsu², Keita Higuchi³, Yasunori Iwahashi³, Kiyohito Nagai³ (1.Faculty of Education and Integrated Arts and Sciences, Waseda University, 2.National Institute of Technology, Wakayama College, 3.MIKIMOTO Pearl REsearch Laboratory)

[BPT05-06] From artisanship to amateur: the challenge to identify large fossils using deep learning

*Ryuichiro Hataya¹, Kumiko Matsui², Tomoki Karasawa³ (1.The University of Tokyo, 2.The Kyushu University Museum, 3.The Mikasa City Museum)