1. National and Kapodistrian University of Athens, Faculty of Geology and Geoenvironment, Department of Hist. Geology-Paleontology, Athens (Greece) dmantzouka@geol.uoa.gr
2. Charles University of Prague, Faculty of Science, Institute of Geology and Palaeontology, Albertov 6, 12843, Prague 2 (Czech Republic) rade@natur.cuni.czkvaček@natur.cuni.cz
3. National and Kapodistrian University of Athens, Faculty of Geology and Geoenvironment, Department of Hist. Geology-Paleontology, Athens (Greece) ekosker@geol.uoa.gr
4. Institute of Geology and Mineral Exploration, 1st Spirou Louis St., Olympic Village, 13677 Acharnae (Greece) ioakim@igme.gr