1. Centro de Astrobiología (INTA/CSIC), Ctra de Torrejón a Ajalvir, km 4, 28850 Torrejón de Ardoz, Spain
2. Department of Earth and Ecosystem Sciences, GeoBiosphere Science Centre, Lund University, Sölvegatan 12, 223 62 Lund, Sweden
3. School of Earth Sciences, The Ohio State University, Columbus, OH 43210, USA
4. IANIGLA-CONICET, c.c. 131, 5500 Mendoza, Argentina
5. School of Earth and Environmental Sciences, Seoul National University, Seoul 151-747, Korea
6. GNS Science - Te Pu Ao, 1 Fairway Drive, Avalon, PO Box 30368, Lower Hutt, New Zealand
7. Institute of Geological Sciences, National Academy of Sciences, ul. Kabanbai Batyr 69a, 480100 Almaty, Republic of Kazakhstan
8. Department of Geology and Natural History Museum/Biodiversity Research Center, University of Kansas, 1475 Jayhawk Blvd., 120 Lindley Hall, Lawrence, KS 66045, USA
9. Department of Geology, Faculty of Sciences, Golestan University, Gorgan 49138-15739, Iran
10. Department of Earth Sciences, University of California, Riverside, CA 92521, USA
11. School of Natural and Built Environments, University of South Australia, Mawson Lakes, SA 5095, Australia
12. Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences, Academician Koptyug Avenue, 3, 630090 Novosibirsk, Russia
13. Petroleum and Marine Division, Geoscience Australia, GPO Box 378, Canberra ACT 2601, Australia
14. Division of Earth Sciences, School of Environmental & Rural Science, University of New England, Armidale, NSW 2351, Australia
15. Siberian Research Institute of Geology, Geophysics and Mineral Resources (SNIIGGiMS), Krasnyj Ave 67, 630091 Novosibirsk, Russia
16. Department of Geology, National Museum of Wales, Cardiff, Cathays Park, Cardiff CF10 3NP, UK
17. Palaeontological Department, The Natural History Museum, London SW7 5BD, UK
18. División Paleontología Invertebrados, Museo de Ciencias Naturales, Paseo del Bosque s/n, 1900 La Plata, Argentina
19. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 21008, China
20. Faculty of Geology, University of Warsaw, Żwirki i Wigury Str. 93, 02-089 Warszawa, Poland