About the Authors
- Eberhard Frey
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* E-mail: dinofrey@aol.com
Affiliation Staatliches Museum für Naturkunde Karlsruhe, Karlsruhe, Germany
- Helmut Tischlinger
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Affiliation Co-opted Scientist, Stammham, Germany
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Contributed reagents/materials/analysis tools: HT. Wrote the paper: EF HT. UV photography: HT. Preparation: HT. Figure composing, line drawing: EF. Writing initial text: EF.