 "Odontogriphus"’s feeding apparatus was located on the midline, about 15% of the total body length from the front edge of the fossils.The mouthparts comprised two to three rows, each comprising about two dozen carbonaceous teeth arranged symmetrically about a medial tooth, with one or two lateral teeth substantially smaller than the central teeth.The teeth operated by passing around an underlying "tongue", with the tooth rows deforming as they did so.