Fig. 4 in Chondrichthyan fauna of the Frasnian-Famennian boundary beds in Poland

Fig. 4. Chondrichthyan microremains from Dębnik, sample Dz−13, Early Pa. triangularis Zone. A, B. "Ctenacanth−type" scales, IGPUW/Ps/4/4 and IGPUW/Ps/4/5. C–I. Stethacanthus resistens sp. nov. teeth. C, D. Problematic tricuspid tooth, IGPUW/Ps/4/6, labial and occlusal views. E. IGPUW/Ps/4/7, basal view. F. IGPUW/Ps/4/8, occlusal view. G–I. IGPUW/Ps/4/9, occlusal, lingual and labial views respectively. All × 80. All SEM micrographs.