1. Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, Warszawa 00-818, Poland
2. UCD Earth Institute and School of Biology and Environmental Science, Science Centre West, University College Dublin, Belfield, Dublin 4, Ireland
3. Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-537 Łódź, Poland
4. Faculty of Science and Technology, University of Silesia in Katowice, Sosnowiec 41-205, Poland
5. Faculty of Natural Sciences, University of Silesia in Katowice, Sosnowiec 41-200, Poland