Fig. 1 in A new genus of terebratulid brachiopod from the Siegenian of the Rheinisches Schiefergebirge

Fig. 1. Geological map of the Rheinisches Schiefergebirge (Germany) and the Ardennes (Belgium/France) showing the distribution of Lower Devonian rocks. 1–12: Main localities of Crassirensselaeria crassicosta (Koch, 1881). 1: Häusling near Siegen (type locality), 2: Overath, 3: Seifen, 4: Aegidienberg, 5: Unkel, 6: Silberküppel and Saalburg quarry, 7: Assmannshausen, 8: Leingipfel near Rüdesheim and Bingerbrück, 9: Koppenstein, south of Gemünden, 10: Hannebach near Kempenich, 11: Katzenelnbogen, 12: Fonds de Wisseletz, between Pepinster and Louveigné, northern Ardennes (Belgium).