3.6. Dental wear and ontogeny
The association between indexes of wear intensity (Indexes 1–3) with the total body length (TBL) of the specimens was tested using a correlation matrix. This analysis was performed only for the long-beaked common dolphin D. capensis, Fraser's dolphin L. hosei, Guiana dolphin S. guianensis, Atlantic spotted dolphin S. frontalis and the bottlenose dolphin T. truncatus, species that had a sufficient number of individuals with known TBL. In cases where the variables showed statistically significant correlation, a linear regression was applied ( Table 3).