Fig. 2 in Acanthodian fish trace fossils from the Early Devonian of Spitsbergen

Fig. 2. Undichna septemsulcata isp. nov., Early Devonian, Spitsbergen. A. Sandstone slab (PMO 169.565) with two specimens of the fish trace Undichna septemsulcata isp. nov., and numerous arthropod trackways (ichnogenera: Merostomichnites, Diplichnites) preserved as delicate positive hyporelief. B, C. Enlarged section and line drawing of the holotype specimen of Undichna septemsulcata isp. nov., overprinted by two arthropod trackways (Diplichnites). D, E. Enlarged section and line drawing of the second, less well−preserved and narrower specimen.