1. Naturalis Biodiversity Center Leiden The Netherlands
2. Institute of Environmental Sciences Leiden University Leiden The Netherlands
3. Institute of Marine Biology National Academy of Sciences of Ukraine Odessa Ukraine
4. Department of Animal Ecology & Systematics Justus Liebig University Giessen Giessen Germany
5. Department of Invertebrate Fauna and Systematics Schmalhausen Institute of Zoology National Academy of Sciences of Ukraine Kiev Ukraine
6. Shirshov Institute of Oceanology of Russian Academy of Sciences Moscow Russia
7. Constanta Branch of the National Research and Development Institute for Marine Geology and Geoecology Constanta Romania
8. Grigore Antipa National Museum of Natural History Bucharest Romania
9. Department of Zoology (Invertebrates) Field Museum of Natural History Chicago IL USA
10. Institute of Biodiversity and Ecosystem Research Bulgarian Academy of Sciences Sofia Bulgaria
11. National Museum of Natural History Bulgarian Academy of Sciences Sofia Bulgaria
12. Laboratory of Macroecology and Biogeography of Invertebrates Saint‐Petersburg State University Saint‐Petersburg Russia
13. Department of Cainozoic Deposits Institute of Geological Sciences National Academy of Sciences of Ukraine Kiev Ukraine
14. Kherson Hydrobiological Station National Academy of Sciences of Ukraine Kherson Ukraine
15. Department of Earth Sciences Utrecht University Utrecht The Netherlands