1. Palaeobiology Section, Canadian Museum of Nature, P.O. Box 3443, Station D, Ottawa, Ontario, K1P 6P4, Canada, ,
2. Department of Aquaculture, National University of Life and Environmental Sciences of Ukraine, General Rodimtsev str. 19, Kyiv 03041, Ukraine,
3. Department of Palaeontology, National Museum of Natural History, National Academy of Sciences of Ukraine, Bogdan Khmelnytsky str. 15, Kyiv 01030, Ukraine
4. Institute of Natural Sciences and Mathematics, Ural Federal University, Mira str. 19, Ekaterinburg 620002, Russia,