Opinions from M. R. Thorpe 1937

  • 'Agriochoerus pumilus is recombined as Protoreodon pumilus'
  • 'Agriotherium is a subjective synonym of Protoreodon'
  • 'Agriotherium paradoxicus is recombined as Protoreodon paradoxicus'
  • 'Agriotherium paradoxicus is recombined as Protoreodon paradoxicus' according to Scott 1899
  • 'Agriotherium paradoxicus is recombined as Chorotherium paradoxicus' according to Berg 1899
  • 'Ancodonta belongs to Artiodactyla'
  • 'Artiodactyla belongs to Ungulata'
  • 'Bathygenys belongs to Merycoidodontidae'
  • 'Bathygenys alpha belongs to Bathygenys'
  • 'Brachymeryx is a subjective synonym of Cyclopidius'
  • 'Brachymeryx feliceps is a subjective synonym of Cyclopidius simus'
  • 'Cotylops is a subjective synonym of Merycoidodon'
  • 'Cotylops speciosa is a subjective synonym of Merycoidodon culbertsonii'
  • 'Cyclopidius belongs to Merycoidodontidae'
  • 'Cyclopidius (Chelonocephalus) belongs to Cyclopidius'
  • 'Cyclopidius (Chelonocephalus) schucherti belongs to Cyclopidius (Chelonocephalus)'
  • 'Cyclopidius emydinus is a subjective synonym of Cyclopidius simus' according to Schlaikjer 1935
  • 'Cyclopidius emydinus is a subjective synonym of Cyclopidius simus'
  • 'Cyclopidius heterodon belongs to Cyclopidius'
  • 'Cyclopidius incisivus is a subjective synonym of Cyclopidius simus'
  • 'Cyclopidius incisivus is a subjective synonym of Cyclopidius simus' according to Schlaikjer 1935
  • 'Cyclopidius lullianus belongs to Cyclopidius'
  • 'Cyclopidius simus belongs to Cyclopidius'
  • 'Eomeryx is a subjective synonym of Protoreodon'
  • 'Eporeodon belongs to Merycoidodontidae'
  • 'Eporeodon (Oreodontoides) was reranked as Oreodontoides and belongs to Merycoidodontidae'
  • 'Eporeodon (Oreodontoides) oregonensis is recombined as Oreodontoides oregonensis'
  • 'Eporeodon cheeki is recombined as Eporeodon major cheeki'
  • 'Eporeodon condoni belongs to Eporeodon'
  • 'Eporeodon major cedrensis is recombined as Eporeodon cedrensis' according to Hay 1930
  • 'Eporeodon major cedrensis belongs to Eporeodon major'
  • 'Eporeodon perbullatus is a subjective synonym of Eporeodon longifrons'
  • 'Eporeodon relictus is recombined as Eporeodon major relictus'
  • 'Eporeodon socialis belongs to Eporeodon'
  • 'Eporeodon thurstoni belongs to Eporeodon'
  • 'Eporeodon trigonocephalus parvus is recombined as Eporeodon parvus'
  • 'Eucrotaphus belongs to Merycoidodontidae'
  • 'Eucrotaphus dickinsonensis is recombined as Eporeodon dickinsonensis'
  • 'Eucrotaphus helenae is recombined as Eporeodon helenae'
  • 'Eucrotaphus jacksoni belongs to Eucrotaphus'
  • 'Eucrotaphus jacksoni leptacanthus is recombined as Eporeodon leptacanthus'
  • 'Eucrotaphus jacksoni pacificus is recombined as Eporeodon pacificus'
  • 'Eucrotaphus jacksoni pacificus is recombined as Eucrotaphus pacificus' according to Trouessart 1898
  • 'Eucrotaphus major longifrons is recombined as Eporeodon longifrons'
  • 'Eucrotaphus montanus is recombined as Eporeodon montanus'
  • 'Eucrotaphus trigonocephalus is recombined as Eporeodon trigonocephalus'
  • 'Eucrotaphus trigonocephalus is recombined as Eporeodon trigonocephalus' according to Roger 1896
  • 'Hyomeryx belongs to Merycoidodontidae'
  • 'Hyomeryx breviceps belongs to Hyomeryx'
  • 'Hypselochoerus is a subjective synonym of Promerycochoerus'
  • 'Leptauchenia belongs to Merycoidodontidae'
  • 'Leptauchenia (Sespia) californica is recombined as Cyclopidius californicus'
  • 'Leptauchenia decora belongs to Leptauchenia'
  • 'Leptauchenia densa is recombined as Cyclopidius densus'
  • 'Leptauchenia densa is recombined as Cyclopidius densa' according to Schlaikjer 1935
  • 'Leptauchenia major belongs to Leptauchenia'
  • 'Leptauchenia minora belongs to Leptauchenia'
  • 'Leptauchenia nitida belongs to Leptauchenia'
  • 'Limnenetes belongs to Merycoidodontidae'
  • 'Limnenetes anceps is recombined as Oreonetes anceps'
  • 'Limnenetes platyceps belongs to Limnenetes'
  • 'Merychyus belongs to Merycoidodontidae'
  • 'Merychyus (Metoreodon) was reranked as Metoreodon and belongs to Merycoidodontidae'
  • 'Merychyus (Metoreodon) profectus is recombined as Metoreodon profectus'
  • 'Merychyus (Metoreodon) relictus belongs to Merychyus (Metoreodon)' according to Hay 1930
  • 'Merychyus (Metoreodon) relictus is recombined as Metoreodon relictus'
  • 'Merychyus arenarum belongs to Merychyus'
  • 'Merychyus arenarum leptorhynchus belongs to Merychyus arenarum'
  • 'Merychyus curtus belongs to Merychyus'
  • 'Merychyus delicatus belongs to Merychyus'
  • 'Merychyus elegans belongs to Merychyus'
  • 'Merychyus euryops is a nomen nudum'
  • 'Merychyus euryops belongs to Merychyus' according to Cope 1899
  • 'Merychyus harrisonensis belongs to Merychyus'
  • 'Merychyus major is recombined as Metoreodon major'
  • 'Merychyus medius is recombined as Metoreodon medius'
  • 'Merychyus medius novomexicanus is recombined as Merychyus novomexicanus'
  • 'Merychyus minimus is recombined as Merychyus arenarum minimus'
  • 'Merychyus paniensis is recombined as Merychyus elegans paniensis'
  • 'Merychyus pariogonus belongs to Merychyus'
  • 'Merychyus siouxensis belongs to Merychyus'
  • 'Merychyus smithi is recombined as Ticholeptus smithi'
  • 'Merycochoerus belongs to Merycoidodontidae'
  • 'Brachycrus is a subjective synonym of Ticholeptus'
  • 'Merycochoerus (Pronomotherium) californicus is recombined as Metoreodon californicus'
  • 'Merycochoerus altiramus is recombined as Pronomotherium altiramus'
  • 'Merycochoerus buwaldi belongs to Merycochoerus'
  • 'Merycochoerus chelydra is recombined as Promerycochoerus chelydra'
  • 'Merycochoerus coenopus belongs to Merycochoerus'
  • 'Merycochoerus compressidens is recombined as Metoreodon compressidens'
  • 'Merycochoerus elrodi is recombined as Pronomotherium elrodi'
  • 'Merycochoerus laticeps is recombined as Pronomotherium laticeps'
  • 'Merycochoerus leidyi is recombined as Promerycochoerus leidyi'
  • 'Merycochoerus macrostegus is recombined as Promerycochoerus macrostegus'
  • 'Merycochoerus madisonius is recombined as Pronomotherium madisonium'
  • 'Merycochoerus madisonius is recombined as Pronomotherium madisonium' according to Douglass 1907
  • 'Merycochoerus magnus belongs to Merycochoerus'
  • 'Merycochoerus matthewi belongs to Merycochoerus'
  • 'Merycochoerus montanus is recombined as Promerycochoerus montanus'
  • 'Merycochoerus obliquidens is recombined as Ticholeptus obliquidens'
  • 'Merycochoerus obliquidens is recombined as Promerycochoerus obliquidens' according to Hay 1930
  • 'Merycochoerus proprius belongs to Merycochoerus'
  • 'Merycochoerus rusticus is recombined as Ticholeptus rusticus'
  • 'Merycochoerus temporalis is a subjective synonym of Promerycochoerus superbus'
  • 'Merycoides belongs to Merycoidodontidae'
  • 'Merycoides cursor belongs to Merycoides'
  • 'Merycoidodon belongs to Merycoidodontidae'
  • 'Merycoidodon culbertsonii belongs to Merycoidodon'
  • 'Merycoidodon culbertsonii belongs to Merycoidodon' according to Weber and Abel 1928
  • 'Merycoidodon platycephalus belongs to Merycoidodon'
  • 'Merycoidodontidae belongs to Merycoidodontoidea'
  • 'Merycoidodontoidea belongs to Ancodonta'
  • 'Mesoreodon belongs to Merycoidodontidae'
  • 'Mesoreodon chelonyx belongs to Mesoreodon'
  • 'Mesoreodon intermedius belongs to Mesoreodon'
  • 'Mesoreodon laticeps is a subjective synonym of Merycoides latidens'
  • 'Mesoreodon latidens is recombined as Merycoides latidens'
  • 'Mesoreodon latidens is recombined as Merycoides latidens' according to Schlaikjer 1934
  • 'Mesoreodon longiceps is recombined as Merycoides longiceps'
  • 'Mesoreodon megalodon belongs to Mesoreodon'
  • 'Mesoreodon scotti belongs to Mesoreodon'
  • 'Monodelphia belongs to Mammalia'
  • 'Oreodon is a subjective synonym of Merycoidodon'
  • 'Oreodon affinis is recombined as Merycoidodon affinis'
  • 'Oreodon affinis belongs to Oreodon' according to Leidy 1869
  • 'Oreodon bullatus is recombined as Eporeodon bullatus'
  • 'Oreodon coloradoensis is a subjective synonym of Merycoidodon gracilis'
  • 'Oreodon culbertsoni periculorum is recombined as Merycoidodon culbertsonii periculorum'
  • 'Oreodon gracile is recombined as Merycoidodon gracilis'
  • 'Oreodon gracile is recombined as Merycoidodon gracilis' according to Matthew 1932
  • 'Oreodon gracile is recombined as Merycoidodon gracilis' according to Gilmore 1906
  • 'Oreodon gracile coloradoensis is a subjective synonym of Merycoidodon gracilis'
  • 'Oreodon hybridus is recombined as Eporeodon major hybridus'
  • 'Oreodon macrorhinus is recombined as Merycoidodon macrorhinus'
  • 'Oreodon major is recombined as Eporeodon major'
  • 'Oreodon minor is a nomen nudum'
  • 'Oreodon minor belongs to Oreodon' according to Cope 1888
  • 'Oreodon occidentalis is recombined as Eporeodon occidentalis'
  • 'Oreodon priscum is a subjective synonym of Merycoidodon culbertsonii'
  • 'Oreodon robustum is a subjective synonym of Merycoidodon culbertsonii'
  • 'Oreodon superbus is recombined as Promerycochoerus superbus'
  • 'Oreonetes belongs to Merycoidodontidae'
  • 'Paracotylops is a subjective synonym of Promerycochoerus'
  • 'Paroreodon belongs to Merycoidodontidae'
  • 'Paroreodon marshi belongs to Paroreodon'
  • 'Phenacocoelus belongs to Merycoidodontidae'
  • 'Phenacocoelus munroensis belongs to Phenacocoelus'
  • 'Phenacocoelus typus belongs to Phenacocoelus'
  • 'Pithecistes is a subjective synonym of Cyclopidius'
  • 'Pithecistes is a subjective synonym of Cyclopidius' according to Schlaikjer 1935
  • 'Pithecistes brevifacies is a subjective synonym of Cyclopidius simus'
  • 'Pithecistes decedens is a subjective synonym of Cyclopidius simus'
  • 'Poatrephes belongs to Merycoidodontidae'
  • 'Poatrephes paludicola belongs to Poatrephes'
  • 'Promerycochoerus belongs to Merycoidodontidae'
  • 'Promerycochoerus (Desmatochoerus) curvidens is recombined as Promerycochoerus curvidens'
  • 'Promerycochoerus carrikeri belongs to Promerycochoerus'
  • 'Promerycochoerus erythroceps belongs to Promerycochoerus'
  • 'Promerycochoerus grandis is recombined as Promerycochoerus montanus grandis'
  • 'Promerycochoerus gregoryi belongs to Promerycochoerus'
  • 'Promerycochoerus hatcheri is recombined as Promerycochoerus hollandi hatcheri'
  • 'Promerycochoerus hesperus belongs to Promerycochoerus'
  • 'Promerycochoerus hollandi belongs to Promerycochoerus'
  • 'Promerycochoerus inflatus is recombined as Promerycochoerus macrostegus inflatus'
  • 'Promerycochoerus latidens is recombined as Promerycochoerus chelydra latidens'
  • 'Promerycochoerus loomisi is recombined as Promerycochoerus gregoryi loomisi'
  • 'Promerycochoerus lulli belongs to Promerycochoerus'
  • 'Promerycochoerus marshi belongs to Promerycochoerus'
  • 'Promerycochoerus microcephalus belongs to Promerycochoerus'
  • 'Promerycochoerus minor is recombined as Promerycochoerus hollandi minor'
  • 'Promerycochoerus pygmyus is recombined as Promerycochoerus vantasselensis pygmaeus'
  • 'Promerycochoerus thomsoni belongs to Promerycochoerus'
  • 'Promerycochoerus vantasselensis belongs to Promerycochoerus'
  • 'Pronomotherium belongs to Merycoidodontidae'
  • 'Pronomotherium siouense belongs to Pronomotherium'
  • 'Protoreodon belongs to Merycoidodontidae'
  • 'Protoreodon medius belongs to Protoreodon'
  • 'Protoreodon minor belongs to Protoreodon'
  • 'Protoreodon parvus belongs to Protoreodon'
  • 'Ticholeptus belongs to Merycoidodontidae'
  • 'Ticholeptus is a subjective synonym of Merychyus' according to Scott 1893
  • 'Ticholeptus is a subjective synonym of Merychyus' according to Scott 1890
  • 'Ticholeptus belongs to Merycoidodontidae' according to Cope 1878
  • 'Ticholeptus bannackensis belongs to Ticholeptus'
  • 'Ticholeptus brachymelis belongs to Ticholeptus'
  • 'Ticholeptus breviceps belongs to Ticholeptus'
  • 'Ticholeptus hypsodus belongs to Ticholeptus'
  • 'Ticholeptus petersoni belongs to Ticholeptus'
  • 'Ticholeptus zygomaticus belongs to Ticholeptus'
  • 'Ungulata was reranked as a superorder and belongs to Monodelphia'