1. State Key Laboratory of Palaeobiology & Stratigraphy; Nanjing Institute of Geology & Palaeontology; Chinese Academy of Sciences; 39 East Beijing Road Nanjing 210008 China
2. School of Environment, Earth & Ecosystem Sciences; The Open University; Milton Keynes MK7 6AA UK
3. Fukui Prefectural Dinosaur Museum; Fukui 911-8601 Japan
4. College of Earth Sciences; Jilin University; Changchun 130061 China
5. Key Laboratory of Economic Stratigraphy & Palaeogeography; Nanjing Institute of Geology & Palaeontology; Chinese Academy of Sciences; 39 East Beijing Road Nanjing 210008 China
6. Nanjing Center; China Geological Survey; 534 East Zhongshan Road Nanjing 210016 China