About the Authors
- Xing Xu, Corwin Sullivan, Fenglu Han
- Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China
- Qingwei Tan
- Long Hao Institute of Geology and Paleontology, Hohhot, Inner Mongolia, China
- Dong Xiao
- Department of Land and Resources, Linhe, Inner Mongolia, China
The authors have declared that no competing interests exist.
Analyzed the data: XX QT CS FH. Contributed reagents/materials/analysis tools: QT. Wrote the paper: XX CS. Preparation and collection management: QT DX.