Did the Australopithecus's have rituals

It's difficult to determine whether or not the Australopithecines had rituals (it might be worth considering what is meant, exactly, by this term) given the fact that the species that comprise this now extinct genus lived between 3.7-1.9 Mya.With small cranial capacities compared to their body size and presumably small pre-frontal cortices, I'd suspect that they might have displayed some limited ritualistic behaviours, perhaps while grooming or foraging in the same way that some chimpanzees (P. troglodytes) have been observed to hand-clasp, for example, but in light of the great time depth at play, and the fact that it's unlikely evidence of ritualistic behaviours would necessarily be preserved in the fossil record at all, it's difficult to answer with absolute certainty one way or the other.