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*Ryuji Asami
Department of Geophysics, Graduate School of Science, Tohoku University
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Tsutomu Yamada
Institute of Geology and Paleontology, Graduate School of Science, Tohoku University
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Yasufumi Iryu
Institute of Geology and Paleontology, Graduate School of Science, Tohoku University
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Gustav Paulay
Department of Zoology, University of Florida
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Takashi Miwa
Institute of Geology and Paleontology, Graduate School of Science, Tohoku University