FIGURE 4. Scanning electron microscope images of NMMNH P-33799, Revueltosaurus callenderi premaxillary tooth showing variation in enamel microstructure in longitudinal section. 1, overview of tooth indicating approximate place where measurements and micrographs shown in this figure were taken; 2-8, close-up views showing enamel thickness variation, with enamel-dentine junction (EDJ) oriented relative to overview in (1) and outer enamel surface (OES) away from the same overview. White scale bars = 20 µm except for 1 (5 mm) and 4 (50 µm). Numbers in image are linked to further enlargements.
FIGURE 4.2. Original micrograph showing tooth enamel microstructure of premaxillary tooth of Revueltosaurus callenderi (P-33799) in longitudinal section at the tip of the crown; EDJ oriented to left of picture.
FIGURE 4.3. Original micrograph showing tooth enamel microstructure of premaxillary tooth of Revueltosaurus callenderi (P-33799) in longitudinal section near the tip of the crown; EDJ oriented to left of picture.
FIGURE 4.4. Original micrograph showing tooth enamel microstructure of premaxillary tooth of Revueltosaurus callenderi (P-33799) in longitudinal section high on the crown; EDJ oriented to left of picture.
FIGURE 4.5. Original micrograph showing tooth enamel microstructure of premaxillary tooth of Revueltosaurus callenderi (P-33799) in longitudinal section high on the crown; EDJ oriented to left of picture.
FIGURE 4.6. Original micrograph showing tooth enamel microstructure of premaxillary tooth of Revueltosaurus callenderi (P-33799) in longitudinal section high on the crown; EDJ oriented to right of picture.
FIGURE 4.7. Original micrograph showing tooth enamel microstructure of premaxillary tooth of Revueltosaurus callenderi (P-33799) in longitudinal section low on the tooth; EDJ oriented to left of picture.
FIGURE 4.8. Original micrograph showing tooth enamel microstructure of premaxillary tooth of Revueltosaurus callenderi (P-33799) in longitudinal section near the middle of the tooth; EDJ oriented to left of picture.
