Sitters and Grügelborn, two important Fossil-Lagerstaetten in the Rotliegend (?Late Carboniferous - Early Permian) of the Saar-Nahe Basin (SW-Germany), with the description of a new palaeoniscoid (Osteichthyes, Actinopterygii). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 232(2/3), 283–314