Opinions from R. C. Hulbert and F. C. Whitmore 2006

  • 'Aphelops belongs to Rhinocerotidae'
  • 'Aphelops mutilus belongs to Aphelops'
  • 'Artiodactyla belongs to Mammalia'
  • 'Borophaginae belongs to Canidae'
  • 'Camelidae belongs to Artiodactyla'
  • 'Canidae belongs to Carnivora'
  • 'Canis (Epicyon) was reranked as Epicyon and belongs to Borophaginae'
  • 'Canis (Epicyon) haydeni is recombined as Epicyon haydeni'
  • 'Carnivora belongs to Mammalia'
  • 'Cetacea was reranked as a suborder and belongs to Cete'
  • 'Cete belongs to Mammalia'
  • 'Cormohipparion belongs to Hipparionini'
  • 'Cormohipparion emsliei belongs to Cormohipparion'
  • 'Dicotyles serus is recombined as Prosthennops serus'
  • 'Dromomerycidae was reranked as the subfamily Dromomerycinae and belongs to Palaeomerycidae'
  • 'Equidae belongs to Perissodactyla'
  • 'Equus (Protohippus) was reranked as Protohippus and belongs to Protohippini'
  • 'Equus eurystylus is recombined as Neohipparion eurystyle'
  • 'Gelocidae belongs to Artiodactyla'
  • 'Gomphotheriidae belongs to Proboscidea'
  • 'Hipparion (Nannippus) was reranked as Nannippus and belongs to Hipparionini'
  • 'Hipparionini belongs to Equidae'
  • 'Lamini belongs to Camelidae'
  • 'Nannippus aztecus belongs to Nannippus'
  • 'Neohipparion belongs to Hipparionini'
  • 'Odontoceti was reranked as a unranked clade and belongs to Cetacea'
  • 'Palaeomerycidae belongs to Artiodactyla'
  • 'Pediomeryx belongs to Dromomerycinae'
  • 'Perissodactyla was reranked as a order and belongs to Mammalia'
  • 'Platanistina was reranked as the family Platanistidae and belongs to Odontoceti'
  • 'Pleiolama belongs to Lamini'
  • 'Pliauchenia vera is recombined as Pleiolama vera'
  • 'Pomatodelphis belongs to Platanistidae'
  • 'Pomatodelphis inaequalis belongs to Pomatodelphis'
  • 'Proboscidea belongs to Mammalia'
  • 'Prosthennops belongs to Tayassuidae'
  • 'Protoceratidae belongs to Artiodactyla'
  • 'Protohippini belongs to Equinae'
  • 'Protohippus gidleyi belongs to Protohippus'
  • 'Pseudoceras belongs to Gelocidae'
  • 'Rhinocerotidae belongs to Perissodactyla'
  • 'Synthetoceras belongs to Synthetoceratinae'
  • 'Synthetoceras davisorum belongs to Synthetoceras'
  • 'Synthetoceratinae belongs to Protoceratidae'
  • 'Taperidae is corrected as Tapiridae and belongs to Perissodactyla'
  • 'Tapirus belongs to Tapiridae'
  • 'Tayassuidae belongs to Artiodactyla'
  • 'Teleoceras belongs to Rhinocerotidae'