Opinions from E. D. Cope 1891

  • 'Amia belongs to Halecomorphi'
  • 'Amia macrospondyla belongs to Amia'
  • 'Amia whiteavesiana belongs to Amia'
  • 'Amiurus belongs to Nematognathi'
  • 'Amiurus cancellatus belongs to Amiurus'
  • 'Amiurus maconnellii belongs to Amiurus'
  • 'Anchitherium westoni [misspelled as Anchitherium westonii] belongs to Anchitherium'
  • 'Bunotheria belongs to Mammalia'
  • 'Caenopus pumilus belongs to Caenopus'
  • 'Chalicotherium belongs to Ancylopoda'
  • 'Chalicotherium bilobatum belongs to Chalicotherium'
  • 'Creodonta was reranked as a unranked clade and belongs to Bunotheria'
  • 'Elotherium belongs to Artiodactyla'
  • 'Elotherium arctatum belongs to Elotherium'
  • 'Glires belongs to Mammalia'
  • 'Halecomorphi belongs to Pisces'
  • 'Hemipsalodon belongs to Oxyaenidae'
  • 'Hemipsalodon grandis belongs to Hemipsalodon'
  • 'Hypertragulus belongs to Oreodontidae'
  • 'Hypertragulus transversus belongs to Hypertragulus'
  • 'Leptomeryx belongs to Oreodontidae'
  • 'Leptomeryx esulcatus belongs to Leptomeryx'
  • 'Leptomeryx mammifer belongs to Leptomeryx'
  • 'Leptomeryx semicinctus belongs to Leptomeryx'
  • 'Macrotherium is a subjective synonym of Chalicotherium'
  • 'Menodus angustigenis belongs to Menodus'
  • 'Menodus selwynianus belongs to Menodus'
  • 'Menodus syceras belongs to Menodus'
  • 'Nematognathi belongs to Pisces'
  • 'Oreodon belongs to Oreodontidae'
  • 'Oreodontidae belongs to Artiodactyla'
  • 'Oxyaenidae belongs to Creodonta'
  • 'Palaeolagus belongs to Glires'
  • 'Palaeolagus turgidus belongs to Palaeolagus'
  • 'Palaeotherium (Menodus) was reranked as Menodus and belongs to Perissodactyla'
  • 'Palaeotherium proutii is recombined as Menodus proutii'
  • 'Perissodactyla belongs to Diplarthra'
  • 'Rhineastes belongs to Nematognathi'
  • 'Rhineastes rhaeas belongs to Rhineastes'
  • 'Rhinoceros americanus is recombined as Menodus americanus'
  • 'Rhinoceros occidentalis is recombined as Caenopus occidentalis'
  • 'Stylemys belongs to Testudinata'
  • 'Stylemys nebrascensis belongs to Stylemys'
  • 'Testudinata was reranked as a unranked clade and belongs to Reptilia'
  • 'Trionyx belongs to Testudinata'
  • 'Trionyx leucopotamicus belongs to Trionyx'