About the Authors

Jens L. Franzen, Jörg Habersetzer
Forschungsinstitut Senckenberg, Frankfurt, Germany

Jens L. Franzen
Naturhistorisches Museum Basel, Basel, Switzerland

Philip D. Gingerich
Museum of Paleontology and Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan, United States of America

Jørn H. Hurum
Natural History Museum, University of Oslo, Oslo, Norway

Wighart von Koenigswald
Steinmann-Institut für Geologie, Mineralogie und Paläontologie, Universität Bonn, Bonn, Germany

B. Holly Smith
Museum of Anthropology, University of Michigan, Ann Arbor, Michigan, United States of America

Corresponding Author

j.h.hurum@nhm.uio.no

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JH. Performed the experiments: JH. Analyzed the data: JLF PDG JH JHH WvK BHS. Wrote the paper: JLF PDG JHH WvK BHS.