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Tooth crown variety in reptiles. SEMs of adult teeth. (A) Unicuspid snake, Python molurus, (B) two crests in gecko, Paroedura picta, arrowed. (C) Tricuspid anole, Anolis allisoni. Cusps arrowed. (D) Tricuspid Monitor lizard, Varanus niloticus. Scale bar = 500 μm (A) and 100 μm (B–D).
