Opinions from E. D. Cope 1893

  • 'Parahippus cognatus is a subjective synonym of Protohippus perditus'
  • 'Auchenia hesterna is recombined as Holomeniscus hesternus'
  • 'Belodon superciliosus belongs to Belodon'
  • 'Borophagus diversidens belongs to Borophagus'
  • 'Canimartes cumminsii belongs to Canimartes'
  • 'Dibelodon praecursor belongs to Dibelodon'
  • 'Dibelodon tropicus belongs to Dibelodon'
  • 'Equus (Protohippus) perditus is recombined as Protohippus perditus'
  • 'Equus barcenoei is a subjective synonym of Equus tau'
  • 'Equus cumminsii belongs to Equus'
  • 'Equus eurystylus belongs to Equus'
  • 'Equus excelsus belongs to Equus'
  • 'Equus minutus belongs to Equus'
  • 'Equus parvulus is recombined as Protohippus parvulus'
  • 'Equus semiplicatus belongs to Equus'
  • 'Equus simplicidens belongs to Equus'
  • 'Felis hillanus belongs to Felis'
  • 'Hipparion is a subjective synonym of Hippotherium'
  • 'Hipparion affine is recombined as Hippotherium affine'
  • 'Hipparion gratum is a subjective synonym of Protohippus placidus'
  • 'Hipparion occidentale is recombined as Hippotherium occidentale'
  • 'Hippidium interpolatum belongs to Hippidium'
  • 'Hippidium spectans belongs to Hippidium'
  • 'Holomeniscus macrocephalus belongs to Holomeniscus'
  • 'Holomeniscus sulcatus belongs to Holomeniscus'
  • 'Mastodon humboldtii is recombined as Dibelodon humboldtii'
  • 'Mastodon serridens is recombined as Tetrabelodon serridens'
  • 'Mastodon shepardii is recombined as Tetrabelodon shepardii'
  • 'Mastodon successor is a subjective synonym of Dibelodon tropicus'
  • 'Protohippus insignis is a subjective synonym of Protohippus medius'
  • 'Merychippus mirabilis is recombined as Protohippus mirabilis'
  • 'Merycodus gemmifer is recombined as Blastomeryx gemmifer'
  • 'Palaeoctonus dumblianus belongs to Palaeoctonus'
  • 'Palaeoctonus orthodon belongs to Palaeoctonus'
  • 'Platygonus bicalcaratus belongs to Platygonus'
  • 'Pliauchenia spatula belongs to Pliauchenia'
  • 'Procamelus gracilis belongs to Procamelus'
  • 'Procamelus leptognathus belongs to Procamelus'
  • 'Procamelus robustus belongs to Procamelus'
  • 'Protohippus castilli belongs to Protohippus'
  • 'Protohippus fossulatus belongs to Protohippus'
  • 'Protohippus labrosus belongs to Protohippus'
  • 'Protohippus lenticularis belongs to Protohippus'
  • 'Protohippus medius belongs to Protohippus'
  • 'Protohippus pachyops belongs to Protohippus'
  • 'Protohippus placidus belongs to Protohippus'
  • 'Protohippus profectus is a subjective synonym of Protohippus perditus'
  • 'Protohippus sejunctus belongs to Protohippus'
  • 'Protohippus supremus is a subjective synonym of Protohippus mirabilis'
  • 'Testudo hexagonata belongs to Testudo'
  • 'Testudo laticaudata belongs to Testudo'
  • 'Testudo pertenius is corrected as Testudo pertenuis and belongs to Testudo'
  • 'Testudo turgida belongs to Testudo'