11:30 AM - 11:45 AM
*Wataru Tonomori1, Hiroshi Sawamura2, Tamaki Sato3, Naoki Kohno1,4 (1.Graduate School of Life and Enviromental Sciences, University of Tsukuba, 2.Ashoro Museum of Paleontology, 3.Department of Astronomy and Earth Sciences, Tokyo Gakugei University, 4.Department of Geology and Paleontology, National Museum of Nature and Science)