Given limited tongue mobility, what parts of the feeding process did the beak and dental batteries primarily accomplish?

Answer

Positioning and processing the forage

The limited mobility of the ceratopsian tongue suggests that the beak and the grinding action of the dental batteries did the majority of the work in positioning and processing the plant material within the mouth.

Given limited tongue mobility, what parts of the feeding process did the beak and dental batteries primarily accomplish?
dietpaleontologydinosaurherbivoreXenoceratops