Tracing the Geochemical History of Eocene Fish Using X-ray FluorescenceLuana R Pereira, Miguel Braçais, Diana Capela, Nuno A. Silva, Pedro A.S. Jorge, António Guerner, Susana Silva, Orlando Frazão and Diana GuimarãesEPJ Web Conf., 335 (2025) 03048DOI: https://doi.org/10.1051/epjconf/202533503048