Fig. 3 in Diversity of tissues in acanthodians with Nostolepis-type histological structure

Fig. 3. Third type of Nostolepis histological structure, with some scales formed entirely of a simple odontocytic mesodentine (A–C) and others an almost acellular, syncitial mesodentine (D). Vertical longitudinal sections. A. Nostolepis timanica (Valiukevičius 2003a: fig. 26A); LIGG, thin section 3375. B, C. Nostolepis platycrista (Valiukevičius 2003b: fig. 14B, C); LIGG, thin sections 3579 and 3582. D. Nostolepis paravolborthi (Valiukevičius 2003b: fig. 19D); LIGG, thin section 3556. Crown mesodentine slightly odontocytic in the lower crown only (the neck area). Scale bars 0.1 mm.