Fig. 1 in Benthic ostracods from the Early-Middle Frasnian transition in the north-western East European Platform, Russia

Fig. 1. Overview map of the region: I, Luga and Ladoga monoclines; II, Latvian Uplift; III, Moscow Syneclise; IV, Voronezh Anteclise; 1, Early Frasnian section in the Syas' River; 2, Early Frasnian section in the vicinity of the town Stary Izborsk; 3, Early–Middle Frasnian section in the town of Porkhov; 4, Early–Middle Frasnian section in the town of Soltsy; 5–7, Early– Middle Frasnian boreholes in the Lake Il'men area; 8, Middle Frasnian section in the town of Semiluki; 9, Early–Middle Frasnian Il'men borehole.