About the Authors
- Ingmar Werneburg
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* E-mail: ingmar_werneburg@yahoo.de
Affiliation Paläontologisches Museum und Institut der Universität Zürich, Zürich, Switzerland
Competing Interests
The author has declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: IW. Performed the experiments: IW. Analyzed the data: IW. Wrote the paper: IW.