ThrinaxodonMassetognathusProbainognathusTritylodontidsPachygenelusAdelobasileusSinoconodonMorganucodonMegazostrodonHaldanodonCastorocaudaHadrocodiumShuotheriumAsfaltomylosAmbondroAusktribosphenosBishopsTeinolophosSteropodonObdurodonOrnithorhynchusTachyglossusFruitafossorGobiconodonRepenomamusAmphilestesYanoconodonJeholodensTrioracodonPriacodonHaramiyaviaPlagiaulacidansCimolodontansTinodonAkidolestesSpalacotheriumMaotheriumZhangheotheriumDryolestesHenkelotheriumAmphitheriumPeramusVincelestesNanolestesKielantheriumAegialodonMontanalestesProkennalestesMurtoilestesEomaiaKennalestesAsioryctesUkhaatheriumZalambdalestesDaulestesAspanlestesEoungulatumCimolestesGypsonictopsProtungulatumErinaceusLeptictisCanisFelisRattusOryctolagusBradypusTamanduaGlyptotheriumDasypusChaetophractusEuphractusHoloclemensiaSinodelphysDeltatheridiumAtokatheridiumSulestesMarsasiaAsiatheriumKokopelliaAnchistodelphysAlbertatheriumDidelphodonPediomysTurgidodonMayulestesPucadelphysAndinodelphysDidelphisMarmosaCaenolestesDasyurusPeramelesDromiciopsThylacomyidaeMacropusAcrobatesPhascolarctosVombatusPhalangerPseudocheirusPetauroidesOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Luo_etal_2007a