About the Authors

Peter Vršanský

geolvrsa@savba.sk

Affiliations Geological Institute, Slovak Academy of Sciences, Bratislava, Slovakia, Arthropoda Laboratory, Paleontological Institute, Russian Academy of Sciences, Moscow, Russia

Thomas van de Kamp

Affiliation ANKA/Institute for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany

Dany Azar

Affiliation Faculty of Science II, Natural Sciences Department, Lebanese University, Fanar, Fanar-Matn, Lebanon

Alexander Prokin

Affiliations I.D. Papanin Institute for biology of inland waters Russian Academy of Sciences, Borok, Russia, Voronezh State University, Voronezh, Russia

L'ubomír Vidlička

Affiliations Institute of Zoology, Slovak Academy of Sciences, Bratislava, Slovakia, Department of Biology, Faculty of Education, Comenius University, Bratislava, Slovakia

Patrik Vagovič

Affiliations ANKA/Institute for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: P. Vršanský TV P. Vagovič. Performed the experiments: P. Vršanský TV P. Vagovič. Analyzed the data: P. Vršanský TV LV P. Vagovič. Contributed reagents/materials/analysis tools: P. Vršanský TV DA AP P. Vagovič. Wrote the paper: P. Vršanský TV DA AP LV P. Vagovič. Initiated the research, identified and drew the immature cockroach with coprolite, and erected and validated the present hypotheses: P. Vršanský. Provided the material and dinosaur information from the locality: DA. Provided and designed the µST experiment, and provided particle measurements and volume segmentation of reconstructed µST data and edited the text: TV P. Vagovič. Provided information on dung beetles and ecology: AP.