Figure 6
From: Developmental and evolutionary novelty in the serrated teeth of theropod dinosaurs
SR-FTIR spectra of enamel and dentine of a cf.Gorgosaurus tooth, ROM 30582.
(A–F), region of interdental fold, (A) optical image, (B) reflectance image, (C) CO2 at 2345 cm−1 present in enamel and interdental fold. (D) cHAP-A at 879 cm−1 in the globular dentine of the interdental fold. (E) cHAP-B at 867 cm−1 in the globular dentine of the interdental fold. (F) Alkyl at 3000-2800 cm−1, representing organic material. Colour bar at the far right with blue as the lowest and red as the highest concentration. (G) FT-IR spectra and assignments. (H) FT-IR spectrum of enamel. (I) FT-IR spectrum of dentine. (J) Deconvolution of cHAP Type A and Type B of enamel. (K) Deconvolution of -CH3 and -CH2 of preserved organics in dentine.
