Opinions from E. D. Cope 1882

  • 'Anacodon belongs to Phenacodontidae'
  • 'Anacodon ursidens belongs to Anacodon'
  • 'Champsosaurus puercensis belongs to Champsosaurus'
  • 'Champsosaurus saponensis belongs to Champsosaurus'
  • 'Coryphodon anax belongs to Coryphodon'
  • 'Coryphodon curvicristis belongs to Coryphodon'
  • 'Coryphodon marginatus belongs to Coryphodon'
  • 'Coryphodon repandus belongs to Coryphodon'
  • 'Cynodontomys belongs to Prosimiae'
  • 'Cynodontomys latidens belongs to Cynodontomys'
  • 'Didymictis curtidens belongs to Didymictis'
  • 'Didymictis massetericus belongs to Didymictis'
  • 'Ectacodon cinctus belongs to Ectacodon'
  • 'Hyopsodus lemoinianus belongs to Hyopsodus'
  • 'Hyracotherium vortmani is recombined as Phenacodus wortmani'
  • 'Manteodon subquadratus belongs to Manteodon'
  • 'Metalophodon testis belongs to Metalophodon'
  • 'Mioclaenus brachystomus belongs to Mioclaenus'
  • 'Mioclaenus etsagicus belongs to Mioclaenus'
  • 'Oligotomus osbornianus belongs to Oligotomus'
  • 'Orohippus tapirinus is recombined as Systemodon tapirinus'
  • 'Pachyaena ossifraga is recombined as Mesonyx ossifragus'
  • 'Pachynolophus posticus belongs to Pachynolophus'
  • 'Pantolestes metsiacus belongs to Pantolestes'
  • 'Pantolestes nuptus belongs to Pantolestes'
  • 'Phenacodus apternus belongs to Phenacodus'
  • 'Phenacodus brachypternus belongs to Phenacodus'
  • 'Phenacodus hemiconus belongs to Phenacodus'
  • 'Phenacodus laticuneus belongs to Phenacodus'
  • 'Phenacodus macropternus belongs to Phenacodus'
  • 'Psittacotherium aspasiae belongs to Psittacotherium'
  • 'Sarcothraustes belongs to Mesonychidae'
  • 'Sarcothraustes antiquus belongs to Sarcothraustes'
  • 'Stypolophus whitiae belongs to Stypolophus'
  • 'Systemodon semihians belongs to Systemodon'
  • 'Triisodon heilprinianus belongs to Triisodon'