Fig. 29. Rhopalondendrina contra igen. et isp. nov. A–E in Taming an ichnotaxonomical Pandora's box: revision of dendritic and rosetted microborings (ichnofamily: Dendrinidae)

Fig. 29. Rhopalondendrina contra igen. et isp. nov. A–E. Overviews and close-ups of the holotype, illustrating the morphology of the entrance tunnel (arrows in A and D; close-ups in C and E) and the anastomosing plexus, covered with short and spiny protrusions (close-up in B). SEM of epoxy cast of a bivalve shell sampled in Middle Miocene strata at Balcome Bay, Victoria, Australia (same for F–H). F. Juvenile specimen (paratype) with clearly visible entrance tunnel (arrow indicating initial point of entry). G–H. Larger specimen (paratype) with the plexus developed on the opposite surface of the bivalve shell from the initial point of entry (arrow in G).