*Xinkai Hu^1,2, Toshiaki Tsunogae¹ (1.Graduate School of Life and Environmental Sciences, University of Tsukuba, 2.School of Earth Sciences and Resources, China University of Geosciences Beijing)

*Sam Uthup¹, Tsunogae Toshiaki^1,2, Rajesh VJ³, Tsutsumi Yukiyasu⁴ (1.Graduate School of Life and Environmental Sciences, University of Tsukuba, Japan, 2.Department of Geology, University of Johannesburg, Auckland Park 2006, South Africa, 3.Department of Earth and Space Sciences, Indian Institute of Space Science and Technology, Trivandrum, India, 4.Department of Geology and Paleontology, National Museum of Nature and Science, Ibaraki 305-0005, Japan.)

Taeko Uehara¹, *Toshiaki Tsunogae^1,2, Thembiso Otladisang Basupi¹, Yukiyasu Tsutsumi³ (1.The University of Tsukuba, 2.University of Johannesburg, 3.National Museum of Nature and Science)

*Qian Liu^1,2, Toshiaki Tsunogae^2,3, Guochun Zhao^4,5 (1.JSPS, 2.Tsukuba Univ. , 3.Johannesburg Univ. , 4.HKU, 5.Northwest Univ.)