FIGURE 7 in Tooth enamel microstructure in North American Phytosauria (Diapsida:Archosauriformes): Implications for biogeography and ecology of a Late Triassic clade of crocodylian-like predators

FIGURE 7. SEM captures of Machaeroprosopus teeth from the Petrified Forest Formation of New Mexico. 7A— NMMNH P-33103 type U tooth, overview of transverse cross-section; 7B—NMMNH P-33103 type U tooth with welldeveloped columns; 7C—NMMNH P-33103 type U tooth fluting with contribution solely from the enamel; 7D— NMMNH P-33105 type I tooth, overview of transverse cross-section; 7E—NMMNH P-33105 type I tooth denticle and maximum enamel thickness; 7F—NMMNH P-33105 type I tooth with well-developed columns. Both overview scale bars equal 2 mm. Enamel image scale bars equal 50 µm.