 It is closely related to the African "Quasiapterodon", and, together with "Dissopsalis", they comprise the hyaenodontid subfamily Apterodontinae.Uniquely among hyaenodontids, it was a semiaquatic, fossorial mammal.It possessed strong forelimbs that were well equipped for digging, compared to those of modern badgers, while the tail, torso and hindlimbs show adaptations similar to those of other aquatic mammals like otters and pinnipeds.