“…We de scribe the pet ro log i cal and geo chem i cal re cord of the Penn syl va nian-Lower Perm ian of the Intra-Sudetic Ba sin, namely of the Lower Anthracosia Shales (LAS), in or der to constrain the in flu ence of cli ma tic fac tors on the sed i men tary sys -tem, while also tak ing the con tri bu tion of tec tonic and vol ca nic ac tiv ity into con sid er ation. The Anthracosia Shales have been pre vi ously de scribed as re gards their strati graphic, palynological and sedimentological fea tures, and their or ganic pe trogra phy (Dziedzic, 1959(Dziedzic, , 1961Don, 1961;Miecznik, 1989;Lorenc, 1993;Bossowski and Ihnatowicz, 1994;Mastalerz and Nehyba, 1997;Nowak, 1998Nowak, , 2003Nowak, , 2007Nowak et al, 2022;Kowalski and Furca, 2023).…”