About the Authors

Susan E. Evans

ucgasue@ucl.ac.uk

Affiliation Department of Cell and Developmental Biology, University College London, London, United Kingdom

Joseph R. Groenke

Affiliation Department of Anatomical Sciences, Stony Brook University, Stony Brook, New York, United States of America

Marc E. H. Jones

Affiliations Department of Cell and Developmental Biology, University College London, London, United Kingdom, School of Earth and Environmental Sciences, The University of Adelaide, Adelaide, South Australia, Australia

Alan H. Turner

Affiliation Department of Anatomical Sciences, Stony Brook University, Stony Brook, New York, United States of America

David W. Krause

Affiliation Department of Anatomical Sciences, Stony Brook University, Stony Brook, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: SEE AHT. Wrote the paper: SEE JRG MEHJ AHT DWK. Described and interpreted fossil material: SEE JRG MEHJ DWK. 3D image reconstructions and specimen imaging: JRG SEE DWK.