About the Authors

Leonard Dewaele

leonard.dewaele@ugent.be

Affiliations Directorate 'Earth and History of Life', Royal Belgian Institute of Natural Sciences, rue Vautier 29, B-1000, Brussels, Belgium, Research Unit Palaeontology, Department Geology and Soil Sciences, Ghent University, Krijgslaan 281, 9000, Ghent, Belgium

Khishigjav Tsogtbaatar

Affiliation Institute of Paleontology and Geology, Mongolian Academy of Sciences, Ulaanbaatar, 210–351, Mongolia

Rinchen Barsbold

Affiliation Institute of Paleontology and Geology, Mongolian Academy of Sciences, Ulaanbaatar, 210–351, Mongolia

Géraldine Garcia

Affiliation Université de Poitiers, IPHEP, UMR CNRS 7262, 6 rue M. Brunet, 86073, Poitiers cedex 9, France

Koen Stein

Affiliation Earth System Science, AMGC, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium

François Escuillié

Affiliation Eldonia, 9 Avenue des Portes Occitanes, 3800, Gannat, France

Pascal Godefroit

Affiliation Directorate 'Earth and History of Life', Royal Belgian Institute of Natural Sciences, rue Vautier 29, B-1000, Brussels, Belgium

Competing Interests

François Escuillié is employed by Eldonia a company specializing in the preparation and casting of fossils. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: LD GG KS. Performed the experiments: LD GG KS. Analyzed the data: LD KT RB GG KS FE PG. Contributed reagents/materials/analysis tools: LD GG KS. Wrote the paper: LD KT RB GG KS FE PG.