Opinions from M. Spaulding et al. 2009
- 'Ambulocetus belongs to Cetaceamorpha'
- 'Andrewsarchus belongs to Cetancodontamorpha'
- 'Anthracokeryx belongs to Artiodactylamorpha'
- 'Anthracotheriidae is an invalid subgroup of Ruminantiamorpha'
- 'Antilocapridae belongs to Pecora'
- 'Archaenodon is corrected as Achaenodon and belongs to Cetancodontamorpha'
- 'Archaeotherium belongs to Entelodontidae'
- 'Artiocetus belongs to Cetaceamorpha'
- 'Artiodactyla was reranked as a unranked clade and belongs to Artiodactylamorpha'
- 'Artiodactylamorpha belongs to Euungulata'
- 'Basilosaurus belongs to Cetaceamorpha'
- 'Bothriogenys belongs to Ruminantiamorpha'
- 'Bovidae belongs to Pecora'
- 'Brachyhyops belongs to Entelodontidae'
- 'Cainotheriidae belongs to Camelidamorpha'
- 'Camelidae belongs to Camelidamorpha'
- 'Camelidamorpha belongs to Artiodactyla'
- 'Carnivora belongs to Carnivoramorpha'
- 'Carnivoramorpha belongs to Ferae'
- 'Cervidae belongs to Pecora'
- 'Cetacea was reranked as a unranked clade and belongs to Cetaceamorpha'
- 'Cetaceamorpha belongs to Cetancodonta'
- 'Cetancodonta belongs to Cetancodontamorpha'
- 'Cetancodontamorpha belongs to Artiodactyla'
- 'Cetartiodactyla is a subjective synonym of Artiodactyla'
- 'Creodonta was reranked as a order and belongs to Ferae'
- 'Diacodexis belongs to Cetaceamorpha'
- 'Dorudon belongs to Cetaceamorpha'
- 'Elomeryx belongs to Ruminantiamorpha'
- 'Entelodontidae belongs to Cetancodontamorpha'
- 'Ferae was reranked as a unranked clade and belongs to Laurasiatheria'
- 'Giraffidae belongs to Pecora'
- 'Gobiohyus belongs to Artiodactylamorpha'
- 'Hapalodectidae belongs to Mesonychia'
- 'Helohyidae is an invalid subgroup of Artiodactylamorpha'
- 'Helohyus belongs to Cetaceamorpha'
- 'Hippopotamidae belongs to Hippopotamidamorpha'
- 'Hippopotamidamorpha belongs to Cetancodonta'
- 'Indohyus belongs to Cetaceamorpha'
- 'Leptomerycidae belongs to Pecora'
- 'Libycosaurus belongs to Ruminantiamorpha'
- 'Mesonychidae belongs to Mesonychia'
- 'Microbunodon belongs to Artiodactylamorpha'
- 'Moschidae belongs to Pecora'
- 'Pecora was reranked as a unranked clade and belongs to Ruminantia'
- 'Perchoerus belongs to Suinamorpha'
- 'Poebrotherium belongs to Camelidamorpha'
- 'Protoceratidae belongs to Ruminantiamorpha'
- 'Rodhocetus belongs to Cetaceamorpha'
- 'Ruminantia was reranked as a unranked clade and belongs to Ruminantiamorpha'
- 'Ruminantiamorpha belongs to Artiodactyla'
- 'Siamotherium belongs to Anthracotheriidae'
- 'Suidae belongs to Suina'
- 'Suina was reranked as a unranked clade and belongs to Suinamorpha'
- 'Suinamorpha belongs to Artiodactyla'
- 'Tayassuidae belongs to Suina'
- 'Tragulidae belongs to Ruminantia'
- 'Whippomorpha is replaced by Cetancodonta'
- 'Xenohyus belongs to Suinamorpha'