Parahippus_leonensisParapliohippus_carrizoensisHeteropliohippus_hulbertiPliohippus_tehonensisAstrohippus_stockiiPliohippus_mirabilisPliohippus_pernixPliohippus_nobilisPliohippus_tantalusPliohippus_fossulatusPliohippus_sp_cf_P_fossulatusDinohippus_leardiDinohippus_interpolatusDinohippus_leidyanusDinohippus_mexicanusEquus_simplicidensOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Kelly_1998ab