Being paleontogist, I am particularly interested in the evolution of Elasmobranchs (our living Sharks & Rays) by regularly switching between neontological data and those from the deep times thanks to the collecting of fossils all over the world by our team. This last decades, I have been particularly interested in the adaptability of Elasmobranchs, whether through the past adaptations to deep or to freshwater, the evolution of prey / predators complex over deep time as well as the migratory dynamics of Elasmobranchs in response to the major environmental changes of the Meso-Cenozoic period (Biotic crises & climatic events). Furthermore, I try to share this macro range vision of evolution in academic teaching through both practical (anatomy, fieldwork) and theoretical courses.