1. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, PR China
2. Paläontologisches Institut und Museum, Universität Zürich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland
3. Finnish Museum of Natural History, PO Box 44, Fi-00014 University of Helsinki, Finland
4. Institute of Geology and Palaeontology, Faculty of Science, Charles University in Prague, Albertov 6, 12843 Praha 2, Czech Republic
5. Institute of Geology of the Czech Academy of Sciences, Rozvojová 269, 165 00 Praha 6, Czech Republic
6. Palaeontological Research and Education Centre, Mahasarakham University, Maha Sarakham 44150, Thailand
7. University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, PR China