The Conference « Across the End Permian “ Great Extinction ” : from Permian-Triassic Field Studies to Scientific Results » is to look back, celebrate, and pay tribute to Dr. Aymon Baud, fifty years of continuous Permian-Triassic field research and corresponding publications produced in part with the support of the Swiss National Science Foundation (SNSF), the Geological Museum of Lausanne and in association with the University of Lausanne, Switzerland. General scientific themes are organized in six plenary sessions over three days, starting August 30, 2023, with keynote talks and regular lectures, that will take place in the Auditorium 1216 of the Synathlon building on the campus of the University of Lausanne.