(Phenacodontids,(Radinskya,((Phenacolophids,((Tethytheres,Hyracoids),(((Hallensia,(H_leporinum,Palaeotheriidae)),(Sifrhippus,((Kihm_sp_B,(Arenahippus_grangeri,Kihm_sp_A,(Arenahippus_aemulor,(Kihm_sp_E,(Arenahippus_pernix,Eohippus_angustidens,H_seekinsi,Kihm_sp_C,(Xenicohippus_craspedotum,Bighorn_large,Kihm_sp_D),(Xenicohippus_grangeri,Xenicohippus_osborni),(Pliolophus_vulpiceps,(Protorohippus_montanum,(Kihm_sp_F,(Protorohippus_venticolum,WR_mediumLysite,WR_mediumLC,(Protorohippus_cf_venticolum,(Protorohippus_aff_venticolum,(Orohippus_major,(Orohippus_pumilus,Epihippus))))))))))))),(Minippus_jicarillai,(Minippus_index,Wind_River_small))))),(Orientolophus,(((Palaeosyops,Lambdotherium),(Ancylopoda,(Homogalax,Cardiolophus))),(Cymbalophus,(Bighorn_lophoid,Systemodon))))))),(Ceratomorpha,Isectolophus))));