- Tetsuro HANAI
- Geological Institute, Faculty of Science, The University of Tokyo
- Noriyuki IKEYA
- Geological Institute, Faculty of Science, Shizuoka University
- Kunihiro ISHIZAKI
- Institute of Geology and Palaeontology, Faculty of Science, Tohoku University
- Yoshiyuki SEKIGUCHI
- Kodama High School, Saitaina Prefecture
- Michiko YAJIMA
- Geological Institute, Faculty of Science, The University of Tokyo
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