Fig. 1 in Diversity of tissues in acanthodians with Nostolepis-type histological structure

Fig. 1. First type of Nostolepis histological structure, with stranggewebe (posterior crown part), simple odontocytic mesodentine network (anterior crown part) and cellular bone (base). A, B, D. Nostolepis striata Pander, 1856 in vertical longitudinal sections. A. All types of tissues and ascending vascular canals (Ørvig 1967: text−fig. 5A); SMNH, thin section S 1044. B. Posterior part of crown with stranglakunae layer covered by a layer of odontocytic mesodentine (Gross 1971: fig. 2G); MNB, thin section 3658. D. Posterior part of scale containing a system of principal wide vascular canals, and a superficial layer of syncitial mesodentine (Gross 1971: fig. 6A); MNB, thin section 3935. C. Nostolepis terraborea (Valiukevičius 2003b: fig. 15C); LIGG, thin section 3644. Simple odontocytic mesodentine network and long stranglakunae in a scale without principal vascular canals. Scale bars 0.1 mm.