“…The earliest known euprimates had relatively small Infraorbital foramina (IOF; Kay & Cartmill, ), which suggests that they depended less on ‘face touch’ (maxillary mechanoreception) than most other mammals. It has been suggested that reduced facial mechanorecption is functionally related to transferring touch discrimination from snout to fingers (Muchlinski, , ; Spriggs, Muchlinski, & Gordon, ), which would be important in visual predation when using the hands to capture prey.…”