Opinions from D. R. Prothero and M. R. Liter 2008
- 'Aletomerycinae belongs to Palaeomerycidae'
- 'Aletomeryx belongs to Aletomerycinae'
- 'Aletomeryx gracilis belongs to Aletomeryx'
- 'Aletomeryx lugni is a subjective synonym of Aletomeryx gracilis'
- 'Aletomeryx marslandensis belongs to Aletomeryx'
- 'Aletomeryx occidentalis belongs to Aletomeryx'
- 'Artiodactyla was reranked as a unranked clade and belongs to Mammalia'
- 'Barbouromeryx belongs to Cranioceratini'
- 'Barbouromeryx (Probarbouromeryx) sweeti is a subjective synonym of Barbouromeryx trigonocorneus'
- 'Barbouromeryx (Protobarbouromeryx) marslandensis is a subjective synonym of Barbouromeryx trigonocorneus'
- 'Bouromeryx milleri is a subjective synonym of Bouromeryx americanus'
- 'Bouromeryx pawniensis is a subjective synonym of Bouromeryx americanus'
- 'Bouromeryx pseudonebrascensis is a subjective synonym of Bouromeryx americanus'
- 'Barbouromeryx submilleri is recombined as Bouromeryx submilleri'
- 'Bouromeryx supernebrascensis is a subjective synonym of Bouromeryx americanus'
- 'Blastomeryx antilopinus is recombined as Subdromomeryx antilopinus'
- 'Blastomeryx borealis is recombined as Dromomeryx borealis'
- 'Blastomeryx marshi is a subjective synonym of Aletomeryx gracilis'
- 'Blastomeryx riparius is recombined as Sinclairomeryx riparius'
- 'Aletomeryx scotti is a subjective synonym of Aletomeryx gracilis'
- 'Bouromeryx belongs to Cranioceratini'
- 'Cervavus sinclairi is recombined as Rakomeryx sinclairi'
- 'Cosoryx teres is recombined as Cranioceras teres'
- 'Cranioceras belongs to Cranioceratini'
- 'Cranioceras (Procranioceras) was reranked as Procranioceras and belongs to Cranioceratini'
- 'Cranioceras (Procranioceras) skinneri is recombined as Procranioceras skinneri'
- 'Cranioceras clarendonensis is a subjective synonym of Cranioceras teres'
- 'Cranioceras dakotensis is a subjective synonym of Cranioceras teres'
- 'Cranioceras granti is a subjective synonym of Cranioceras unicornis'
- 'Rakomeryx kinseyi is a subjective synonym of Subdromomeryx antilopinus'
- 'Cranioceras mefferdi is a subjective synonym of Cranioceras unicornis'
- 'Cranioceras unicornis belongs to Cranioceras'
- 'Cranioceratini belongs to Dromomerycinae'
- 'Drepanomeryx belongs to Dromomerycini'
- 'Drepanomeryx falciformis belongs to Drepanomeryx'
- 'Dromomerycidae was reranked as the subfamily Dromomerycinae and belongs to Palaeomerycidae'
- 'Dromomerycini belongs to Dromomerycinae'
- 'Dromomeryx belongs to Dromomerycini'
- 'Dromomeryx (Subdromomeryx) was reranked as Subdromomeryx and belongs to Dromomerycini'
- 'Subdromomeryx scotti is a subjective synonym of Subdromomeryx antilopinus'
- 'Subdromomeryx wilsoni is a subjective synonym of Subdromomeryx antilopinus'
- 'Dromomeryx parvus is a subjective synonym of Bouromeryx americanus'
- 'Dromomeryx pawniensis is a subjective synonym of Dromomeryx borealis'
- 'Dromomeryx trigonocorneus is recombined as Barbouromeryx trigonocorneus'
- 'Dromomeryx whitfordi is a subjective synonym of Dromomeryx borealis'
- 'Palaeomerycidae belongs to Artiodactyla'
- 'Palaeomeryx americanus is recombined as Bouromeryx americanus'
- 'Palaeomeryx madisonius is a subjective synonym of Bouromeryx americanus'
- 'Parablastomeryx galushi is a subjective synonym of Barbouromeryx trigonocorneus'
- 'Pediomeryx belongs to Cranioceratini'
- 'Pediomeryx hamiltoni is recombined as Yumaceras hamiltoni'
- 'Pediomeryx hemphillensis belongs to Pediomeryx'
- 'Pediomeryx ruminalis is recombined as Yumaceras ruminalis'
- 'Procoileus edensis is a subjective synonym of Pediomeryx hemphillensis'
- 'Rakomeryx belongs to Dromomerycini'
- 'Rakomeryx gazini is a subjective synonym of Rakomeryx sinclairi'
- 'Rakomeryx jorakius is a subjective synonym of Rakomeryx sinclairi'
- 'Rakomeryx raki is a subjective synonym of Rakomeryx sinclairi'
- 'Rakomeryx yermonensis is a subjective synonym of Rakomeryx sinclairi'
- 'Sinclairomeryx belongs to Aletomerycinae'
- 'Sinclairomeryx sinclairi is a subjective synonym of Sinclairomeryx riparius'
- 'Sinclairomeryx tedi is a subjective synonym of Sinclairomeryx riparius'
- 'Yumaceras belongs to Cranioceratini'
- 'Yumaceras falkenbachi is a subjective synonym of Pediomeryx hemphillensis'
- 'Yumaceras figginsi belongs to Yumaceras'