PhenacodusPropachynolophus_gaudryiPropachynolophus_leveiHyracotherium_leporinumPropachynolophus_maldaniPliolophus_pernixPliolophus_vulpicepsHyracotherium_sandraeCymbalophus_cuniculusPachynolophus_hookeriHallensia_louisiCardiolophusEctocionOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Hooker_1994a