1. Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8564, Japan,
2. Steinmann Institute for Geology, Mineralogy and Paleontology, University of Bonn, 53115 Bonn, Germany
3. Department of Herpetology, Zoological Institute, Russian Academy of Sciences, Universitetskaya Emb. 1, St. Petersburg 199034, Russia,
4. Department of Vertebrate Zoology, Saint Petersburg State University, Universitetskaya Emb. 7/9, St. Petersburg, 199034, Russia
5. School of International Liberal Studies, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8650, Japan,
6. Fukui Prefectural Dinosaur Museum, 51-11 Terao, Muroko, Katsuyama, Fukui 911-8601, Japan,
7. Universität Zürich, Paläontologisches Institut und Museum, Karl Schmid-Strasse 4, CH-8006 Zürich, Switzerland,