About the Authors

Yuri Kimura

ykimura@mail.smu.edu

Affiliations Roy M. Huffington Department of Earth Sciences, Southern Methodist University, Dallas, Texas, United States of America, Peabody Museum and Department of Human Evolutionary Biology, Harvard University, Cambridge, Massachusetts, United States of America

Louis L. Jacobs

Affiliation Roy M. Huffington Department of Earth Sciences, Southern Methodist University, Dallas, Texas, United States of America

Lawrence J. Flynn

Affiliation Peabody Museum and Department of Human Evolutionary Biology, Harvard University, Cambridge, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YK LLJ LJF. Performed the experiments: YK. Analyzed the data: YK. Contributed reagents/materials/analysis tools: YK. Wrote the paper: YK LLJ LJF.