Opinions from J. Leidy 1858

  • 'Aelurodon ferox belongs to Aelurodon'
  • 'Anchitherium (Hypohippus) belongs to Anchitherium'
  • 'Anchitherium (Parahippus) belongs to Anchitherium'
  • 'Anchitherium (Parahippus) cognatus belongs to Anchitherium (Parahippus)'
  • 'Canis (Epicyon) belongs to Canis'
  • 'Canis (Epicyon) haydeni belongs to Canis (Epicyon)'
  • 'Canis dirus belongs to Canis'
  • 'Canis saevus belongs to Canis'
  • 'Canis temerarius belongs to Canis'
  • 'Canis vafer belongs to Canis'
  • 'Castor (Eucastor) belongs to Castor'
  • 'Castor (Eucastor) tortus belongs to Castor (Eucastor)'
  • 'Cervus warreni belongs to Cervus'
  • 'Elephas (Euelephas) belongs to Elephas'
  • 'Elephas (Euelephas) imperator belongs to Elephas (Euelephas)'
  • 'Equus (Protohippus) belongs to Equus'
  • 'Equus (Protohippus) perditus belongs to Equus (Protohippus)'
  • 'Equus excelsus belongs to Equus'
  • 'Felis (Pseudaelurus) intrepidus belongs to Felis (Pseudaelurus)'
  • 'Hystrix (Hystricops) belongs to Hystrix'
  • 'Hystrix (Hystricops) venustus belongs to Hystrix (Hystricops)'
  • 'Mastodon (Tetralophodon) belongs to Mastodon'
  • 'Mastodon (Tetralophodon) mirificus belongs to Mastodon (Tetralophodon)'
  • 'Megalomeryx niobrarensis belongs to Megalomeryx'
  • 'Merychippus mirabilis belongs to Merychippus'
  • 'Merychyus elegans belongs to Merychyus'
  • 'Merychyus major belongs to Merychyus'
  • 'Merychyus medius belongs to Merychyus'
  • 'Merycochoerus proprius belongs to Merycochoerus'
  • 'Procamelus occidentalis belongs to Procamelus'
  • 'Pseudaelurus was reranked as Felis (Pseudaelurus) and belongs to Felis'
  • 'Rhinoceros crassus belongs to Rhinoceros'
  • 'Stylemys was reranked as Testudo (Stylemys) and belongs to Testudo'
  • 'Testudo (Stylemys) niobrarensis belongs to Testudo (Stylemys)'