Fig. 14 in Taming an ichnotaxonomical Pandora's box: revision of dendritic and rosetted microborings (ichnofamily: Dendrinidae)

Fig. 14. Calcideletrix fastigata (Radtke, 1991) comb. nov. A–C. SEM of the lectotype (together with fungal trace Saccomorpha clava Radtke, 1991) in an epoxy cast of an Oligocene Pecten bivalve shell from the Niederrheinische Bucht, Germany. Close-up in B illustrates the fine rhizoidal connections to the substrate surface. Close-up in C shows framboidal pyrite spheres (fossil fungal spores?) embedded within the resin. D–F. Large paralectotype in a cast of an Oligocene Ostrea bivalve shell from the same locality. Close-up in E exhibits the alternating bifurcation pattern of very fine peripheral galleries. Closeup in F shows the centre of the trace with further framboidal pyrite aggregates; epoxy resin was hindered in penetrating the cavity due to calcite spar (now dissolved).