haramiyids show certain similarities to multituberculates, a group of mammals that survived until about 40 million years ago. it is possible that haramiyids are ancestral to multituberculates, although the available evidence is insufficient to be conclusive. certain characteristics of the teeth seem to rule out a special relationship between the two groups, although some studies still unite haramiyids (or at least euharamiyids) and multituberculates in the allotheria hypothesis.