Research Article
Spectroscopic Analysis of a Theropod Dinosaur (Reptilia, Archosauria) from the Ipubi Formation, Araripe Basin, Northeastern Brazil
Table 1
Infrared main bands and tentative assignments of the main infrared bands of the fossil and the matrix stone [
14–
16].
| Band | Fossil (cm−1) | Assignment—Fossil | Matrix (cm−1) | Assignment—Matrix Stone |
| 1 | 470 | Asymmetric deformation | 469 | Asymmetric deformation | 2 | 565 | Asymmetric deformation | 525 | — | 3 | 604 | Asymmetric deformation | 570 | Asymmetric deformation | 4 | 866 | Asymmetric deformation | 605 | Asymmetric deformation | 5 | 960 | Symmetric stretching | 710 | Symmetric deformation | 6 | 1041 | Asymmetric stretching | 870 | Asymmetric deformation | 7 | 1425 | Asymmetric stretching | 1040 | Asymmetric stretching | 8 | 1457 | Asymmetric stretching | 1430 | Asymmetric stretching |
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