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Tooth cusp development in the anole, Anolis allisoni. (A,B) SEMs of a developing unerupted tooth (A) and a functional tooth (B). (C–E) Sagittal sections through developing anole teeth at stage 17 and 18. (C′–E′) High power views of the images above. The cusps can be seen to form by folding of the inner enamel epithelium. See arrow in (C′). Scale bar = 100 μm (A,B) and 50 μm (C–E, C′–E′).
