About the Authors

Laura B. Porro

lporro@rvc.ac.uk

Affiliations Structure and Motion Laboratory, Royal Veterinary College, University of London, Hatfield, United Kingdom, School of Earth Sciences, University of Bristol, Bristol, United Kingdom, Department of Zoology, University of Cambridge, Cambridge, United Kingdom

Emily J. Rayfield

Affiliation Structure and Motion Laboratory, Royal Veterinary College, University of London, Hatfield, United Kingdom

Jennifer A. Clack

Affiliation School of Earth Sciences, University of Bristol, Bristol, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LBP EJR JAC. Performed the experiments: LBP. Analyzed the data: LBP. Contributed reagents/materials/analysis tools: LBP EJR JAC. Wrote the paper: LBP EJR JAC.