HyracotheriumOrohippusEpihippusMesohippusMiohippusAnchitheriumHypohippusMegahippusKalobatippusArchaeohippusParahippusMerychippusProtohippusPliohippusDinohippusEquusHipparionNeohipparionPseudhipparionOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Evander_1989a