SYLVAIN CHARBONNIER, professor of palaeontology and chief curator of the palaeontological collections at the Muséum national d'Histoire naturelle. Paris (France) studies exceptionally preserved fossils from Konservat-Lagerstätten (Montceau-les-Mines. La Voulte-sur-Rhône. Solnhofen. Canjuers. Cerin, Hadioula, Hakel). His main scientific interests focus on Mesozoic marine arthropods (crustaceans, thylacocephalans, pycnogonids) and the reconstruction of their palaeoecosystems.
He was president of the Société Géologique de France between 2016 and 2020. ALESSANDRO CARASSIN, research associate at the Department of Earth and Biological Sciences of Loma Linda University, and at the Department of Paleontology of North Carolina Museum of Natural Sciences (U.S.A.), is specialized on Mesozoic and Cenozoic sites with exceptional preservation (Osteno, Lebanon, Gara Sbaa). His activity focuses on the taxonomy of fossil decapod crustaceans, and the establishment of possible phylogenetic relationships between fossil and Recent taxa.