1. Department of Vertebrate Zoology, Faculty of Biology, Saint Petersburg State University, St. Petersburg, Russia
2. Laboratory of Theriology, Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia
3. Laboratory of Paleoherpetology, Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow, Russia
4. Laboratory of Herpetology, Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia