About the Authors

Michael Bunce

To whom correspondence should be addressed. E-mail: buncem@mcmaster.ca

Affiliations Henry Wellcome Ancient Biomolecules Centre, Department of Zoology, University of Oxford, United Kingdom, Department of Anthropology, McMaster University, Ontario, Canada

Marta Szulkin

Affiliation Henry Wellcome Ancient Biomolecules Centre, Department of Zoology, University of Oxford, United Kingdom

Heather R. L Lerner

Affiliation Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan, United States of America

Ian Barnes

Affiliation Department of Biology, University College London, United Kingdom

Beth Shapiro

Affiliation Henry Wellcome Ancient Biomolecules Centre, Department of Zoology, University of Oxford, United Kingdom

Alan Cooper

Affiliation Henry Wellcome Ancient Biomolecules Centre, Department of Zoology, University of Oxford, United Kingdom

Richard N Holdaway

Affiliation Palaecol Research, Christchurch, New Zealand

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

MB, AC, and RNH conceived and designed the experiments. MB, MS, HRLL, IB, and BS performed the experiments. MB and BS analyzed the data. MB and RNH wrote the paper.