FIGURE 6 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 6. SEM captures of "Rutiodon" teeth. 6A—NCSM 23303 type B tooth in transverse section with well-developed columns along lingual margin and abundant LIGs; 6B—NCSM 23303 type B tooth in transverse section with well-developed columns along labial margin and abundant LIGs; 6C—NCSM 24322A type U tooth in tangential section showing polygonal columnar packages ~10 µm above EDJ with abundant LIGs; 6D—NCSM 24322B type U tooth in longitudinal section showing minimum thickness of enamel along posterior margin just above tooth base with abundant LIGs; 6E—NCSM 25043 type C? tooth in transverse section with thin (~10 µm wide) well-developed columnar enamel with abundant LIGs in outer half of enamel; 6F—NCSM 25075 type I tooth in transverse section of well-developed columnar enamel with abundant LIGs. All scale bars equal 50 µm.