1. Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow, Russia
2. Earth Sciences Department, University of Florence, Florence, Italy
3. Department of Geology, Autonomous University of Barcelona, Barcelona, Spain
4. Veterinary Hospital Skolkovo Vet, Moscow, Russia
5. Institute of Plant and Animal Ecology, Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia