 The head is small relative to the large body , and quite distinctive in shape , being flat and blunt at the front , like the snout of a pig . Some teeth are chisel @-@ shaped , small and leaf @-@ like , indicating a probable herbivorous diet , although peg @-@ like teeth and a keratinous snout have been considered possible adaptations in some species for feeding on colonial insects . A study of the braincase of Stagonolepis robertsoni has shown that there are similarities between it and those of crocodylomorphs , which may indicate a close relationship . 
