About the Authors

Fabien Knoll

knoll@mncn.csic.es

Affiliation Departamento de Paleobiología, Museo Nacional de Ciencias Naturales-CSIC, Madrid, Spain

Lawrence M. Witmer

Affiliation Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, United States of America

Francisco Ortega

Affiliation Facultad de Ciencias, Universidad Nacional de Educación a Distancia, Madrid, Spain

Ryan C. Ridgely

Affiliation Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, United States of America

Daniela Schwarz-Wings

Affiliation Museum für Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity, Humboldt University, Berlin, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FK LMW FO DSW. Performed the experiments: FK LMW RCR. Analyzed the data: FK LMW RCR. Contributed reagents/materials/analysis tools: FO LMW RCR. Wrote the paper: FK LMW DSW.