Figure 5 in Paleohistological studies of bone and teeth in Gyrodus circularis (Gyrodidae: Pycnodontiformes: Actinopterygii). Phylogenetic implications for the Gyrodidae

Figure 5. – Gyrodus circularis. (MNHN. JRE 540). Ground sections (MNHN-F-Histos 2743) (transmitted natural light). A: Detail of the right side of the tooth (see Fig. 2) showing the presence of spheritic dentine (arrowheads) and the spongy alveolar bone (ab). B: (MNHNF-Histos 2741) Detail of dentine showing the parallel odontoblastic canalicles and two odontocytes (arrows) and the spheritic dentine (arrowheads). C: Detail of two odontocytes with their thick parallel canalicles. The arrowhead points to the spheritic dentine pulpar wall; de: dentine; pc: pulp cavity. Scale bars: A = 100 μm; B = 100 μm; C = 10 μm.