A study led by researchers from the Institut Català de Paleontologia Miquel Crusafont published in Palaeogeography, Palaeoclimatology, Palaeoecology describes the environmental and faunal changes that took place between 290 and 270 million years ago in the current region of Berguedà (Catalonia, North-East Spain). The Permian sedimentary deposits in this area reveal a transition from a landscape with rivers and floodplains to a more arid environment with a monsoonal regime. In parallel, the fossil footprint record indicates a faunal shift where amphibians disappeared.