1. Faculty of Biosphere-Geosphere Science, Okayama University of Science, Kita-ku Ridaicho 1-1, Okayama 700-0005, Japan (e-mail: )
2. Department of Natural Sciences, Faculty of Science and Engineering, Tokyo City University, Tamazutsumi 1-28-1, Setagaya-ku, Tokyo 158-8557, Japan
3. Sapporo City Museum Activity Center, Hiragishi 5-15-6, Toyohira-Ku, Sapporo, Hokkaido 062-0935, Japan
4. National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki 305-0005, Japan
5. Nagaike-Michishita, Shinden-cho, 222-1, Marugame, Kagawa 763-0055, Japan
6. Institute of Paleontology, Mongolian Academy of Sciences, S. Danzen Street 3/1, Ulaanbaatar 15160, Mongolia