Plagiostomoceras? cardiolae (Gürich, 1896) from the Famennian of Poland. 1. Longitudinal section through a phragmoconefrom the Platyclymenia Zone, Łagów-Dule. 2. Longitudinal section through a phragmocone from the Cheiloccras Zone, Jabłonna, bed J. 11. 3. Sectioned specimen from the same locality, bed J . 7. 4. Phragmocone of adult specimen from the Platyclymenia Zone of Łagów-Dule in ventral? (a), lateral (b) and septal (c) views.