 Archaeoindris is thought to have been a leaf-eater (folivorous), a view supported by wear patterns on its teeth. Its fused mandibular symphyses and the likelihood of accelerated dental development suggest that it began processing fibrous foods in the mouth with thorough chewing. Its diet may also have included some fruits and seeds. Like most of the other giant lemurs, Archaeoindris is thought to have been diurnal because of its relatively small orbits, which are comparable to those of gorillas.
