Opinions from L. T. Holbrook 1999

  • 'Amynodon belongs to Amynodontidae'
  • 'Amynodontidae belongs to Rhinocerotoidea'
  • 'Cardiolophus belongs to Perissodactyla'
  • 'Ceratomorpha was reranked as a infraorder and belongs to Tapiromorpha'
  • 'Chalicotheriidae belongs to Chalicotherioidea'
  • 'Chalicotherioidea belongs to Perissodactyla'
  • 'Colodon belongs to Helaletidae'
  • 'Colodon hancocki is recombined as Plesiocolopirus hancocki'
  • 'Deperetella belongs to Deperetellidae'
  • 'Deperetellidae belongs to Tapiroidea'
  • 'Eomoropidae belongs to Chalicotherioidea'
  • 'Eomoropus belongs to Eomoropidae'
  • 'Forstercooperia belongs to Rhinocerotoidea'
  • 'Helaletes belongs to Helaletidae'
  • 'Helaletidae belongs to Tapiroidea'
  • 'Heptodon belongs to Heptodontidae'
  • 'Heptodontidae belongs to Tapiroidea'
  • 'Homogalax belongs to Perissodactyla'
  • 'Hyrachyidae belongs to Rhinocerotoidea'
  • 'Hyrachyus belongs to Hyrachyidae'
  • 'Hyracodon belongs to Hyracodontidae'
  • 'Hyracodontidae belongs to Rhinocerotoidea'
  • 'Indricotheriidae belongs to Rhinocerotoidea'
  • 'Isectolophidae belongs to Tapiromorpha'
  • 'Isectolophus belongs to Isectolophidae'
  • 'Juxia belongs to Rhinocerotoidea'
  • 'Lophialetes belongs to Lophialetidae'
  • 'Lophialetidae belongs to Tapiroidea'
  • 'Moropus belongs to Chalicotheriidae'
  • 'Paraceratherium belongs to Indricotheriidae'
  • 'Plesiocolopirus belongs to Helaletidae'
  • 'Protapirus belongs to Tapiridae'
  • 'Rhinocerotidae belongs to Rhinocerotoidea'
  • 'Rhinocerotoidea belongs to Ceratomorpha'
  • 'Rostriamynodon belongs to Amynodontidae'
  • 'Schlosseria belongs to Lophialetidae'
  • 'Subhyracodon belongs to Rhinocerotidae'
  • 'Taperidae is corrected as Tapiridae and belongs to Tapiroidea'
  • 'Tapiroidea belongs to Ceratomorpha'
  • 'Tapiromorpha belongs to Perissodactyla'
  • 'Tapirus belongs to Tapiridae'
  • 'Teletaceras belongs to Rhinocerotidae'
  • 'Trigonias belongs to Rhinocerotidae'
  • 'Triplopus belongs to Hyracodontidae'
  • 'Uintaceras belongs to Rhinocerotidae'