Fig. 12 in Taming an ichnotaxonomical Pandora's box: revision of dendritic and rosetted microborings (ichnofamily: Dendrinidae)

Fig. 12. Calcideletrix breviramosa Mägdefrau, 1937. A–C. Holotype covering several square centimetres of an Upper Cretaceous belemnite from Misburg, Germany. Close-up in B shows main tunnels with lateral secondary galleries and close-up in C illustrates connections to the substrate surface at the end of the secondary branches (arrows).