About KAWAHATA Hodaka
About Univ. Tokyo, Chiba, JPN
About NOMURA Ritsuo
About Shimane Univ., Matsue, JPN
About MATSUMOTO Katsumi
About Univ. Minnesota, MN, USA
About NISHI Hiroshi
About Tohoku Univ., Sendai, JPN
About Island Arc (Web)
About 暁新世
About 始新世
About 境界
About 深海底
About 海洋酸性化
About 有孔虫
About 絶滅