*Hisao Ando¹ (1.Department of Earth Sciences, College of Science, Ibaraki University)

*Taiga Tomaru¹, Reishi Takashima², Yuji Orihashi³, Toshiro Yamanaka⁴, Hisao Ando⁵, Yoshihiro Asahara⁶, Hiroshi Nishi⁷, Azumi Kuroyanagi² (1.Department of Earth Science, Graduate School of Science, Tohoku University, 2.The Center for Academic Resources and Archives Tohoku University Museum , 3.Global Environment and Disaster Prevention Sciences, Graduate School of Science and Technology, Hirosaki University, 4. School of Marine Resource and Environment, Tokyo University of Marine Science and Technology, 5.Department of Earth Science, Graduate School of Science and Engineering, Ibaraki University, 6.Department of Earth and Environmental Sciences, Graduate School of Environmental Studies, Nagoya University, 7.Institute of Dinosaur Research , Fukui Prefectural University)