Fig. 18 in Taming an ichnotaxonomical Pandora's box: revision of dendritic and rosetted microborings (ichnofamily: Dendrinidae)

Fig. 18. Abeliella procera Mägdefrau, 1937. A. Two specimens in the lectotype sample, a transparent Oligocene fish scale. B. Close-up of lectotype illustrating details of the dichotomous bifurcation pattern in the central part of the larger (upper) specimen in A. Note the spherical aggregates (fossil spores?) filling part of the empty tunnels. C. Large specimen, together with a small A. riccioides to the right, in a Hexanthus sp. fish tooth from the lower Maastrichtian of Rügen, Germany.