About the Authors

Lida Xing

Affiliation Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada

Phil R. Bell

philbyb@gmail.com

Affiliation Pipestone Creek Dinosaur Initiative, Clairmont, Alberta, Canada

W. Scott Persons IV

Affiliation Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada

Shuan Ji

Affiliation Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China

Tetsuto Miyashita

Affiliation Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada

Michael E. Burns

Affiliation Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada

Qiang Ji

Affiliation Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China

Philip J. Currie

Affiliation Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: LX PB WSP MB TM PC SJ QJ. Wrote the paper: LX PB WSP TM MB.