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 [1416].

Band Fossil (cm−1)Assignment—FossilMatrix (cm−1)Assignment—Matrix Stone

1470Asymmetric deformation469Asymmetric deformation
2565Asymmetric deformation525
3604Asymmetric deformation570Asymmetric deformation
4866Asymmetric deformation605Asymmetric deformation
5960Symmetric stretching710Symmetric deformation
61041Asymmetric stretching870Asymmetric deformation
71425Asymmetric stretching1040Asymmetric stretching
81457Asymmetric stretching1430Asymmetric stretching