“…Similarly, long-term research in the Taï Forest has shown how oral processing can be used to interpret aspects of craniodental morphology [ 17 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 ] and the consequences of processing different foods, including dental macro- and microwear [ 17 , 54 , 55 ]. Pairing morphological studies with field observation of idiosyncratic or conspicuous feeding behaviors (e.g., the isometric bite of Cercocebus atys eating Sacoglottis gabonensis seeds [ 47 , 49 , 50 ] or the incisal gnawing of Pentaclethera macrophylla pods by Colobus polykomos [ 42 , 43 , 44 , 51 ]) provided the necessary context to interpret morphology.…”