Opinions from D. J. Froehlich 2002

  • 'Arenahippus belongs to Equidae'
  • 'Eohippus belongs to Equidae'
  • 'Eohippus pernix is recombined as Arenahippus pernix'
  • 'Eohippus validus is a subjective synonym of Eohippus angustidens'
  • 'Eohippus venticolus is recombined as Protorohippus venticolum'
  • 'Epihippus belongs to Equidae'
  • 'Equidae belongs to Hippomorpha'
  • 'Equoidea is a subjective synonym of Hippomorpha'
  • 'Hallensia belongs to Hippomorpha'
  • 'Hyracotherium belongs to Hippomorpha'
  • 'Hyracotherium aemulor is recombined as Arenahippus aemulor'
  • 'Hyracotherium craspedotum is recombined as Xenicohippus craspedotum'
  • 'Hyracotherium cristatum is a subjective synonym of Systemodon tapirinus'
  • 'Hyracotherium cuniculus belongs to Hyracotherium' according to Owen 1842
  • 'Hyracotherium cuniculus is recombined as Cymbalophus cuniculus'
  • 'Hyracotherium grangeri is recombined as Arenahippus grangeri'
  • 'Hyracotherium leporinum belongs to Hyracotherium' according to Owen 1841
  • 'Hyracotherium leporinum belongs to Hyracotherium'
  • 'Hyracotherium montanum is recombined as Protorohippus montanum'
  • 'Hyracotherium sandrae is recombined as Sifrhippus sandrae'
  • 'Hyracotherium seekinsi is a subjective synonym of Eohippus angustidens'
  • 'Lophiodon pumilus is recombined as Orohippus pumilus'
  • 'Minippus belongs to Equidae'
  • 'Minippus jicarillai belongs to Minippus'
  • 'Orohippus belongs to Equidae'
  • 'Orohippus angustidens is recombined as Eohippus angustidens'
  • 'Hyracotherium cuspidatum is a subjective synonym of Eohippus angustidens'
  • 'Orohippus major belongs to Orohippus'
  • 'Orohippus tapirinus is recombined as Systemodon tapirinus'
  • 'Orotherium index is recombined as Minippus index'
  • 'Palaeotheriidae belongs to Hippomorpha'
  • 'Pliolophus belongs to Equidae'
  • 'Pliolophus vulpiceps belongs to Pliolophus' according to Owen 1858
  • 'Pliolophus vulpiceps belongs to Pliolophus'
  • 'Protorohippus belongs to Equidae'
  • 'Sifrhippus belongs to Equidae'
  • 'Systemodon belongs to Tapiromorpha'
  • 'Xenicohippus belongs to Equidae'
  • 'Xenicohippus grangeri belongs to Xenicohippus'
  • 'Xenicohippus osborni belongs to Xenicohippus'