Opinions from R. J. Butler and R. M. Sullivan 2009
- 'Agilisaurus belongs to Neornithischia'
- 'Agilisaurus louderbacki belongs to Agilisaurus'
- 'Archaeoceratops oshimai belongs to Archaeoceratops'
- 'Avaceratops lammersi belongs to Avaceratops'
- 'Cerapoda belongs to Neornithischia'
- 'Changchunsaurus parvus belongs to Changchunsaurus'
- 'Eocursor parvus belongs to Eocursor'
- 'Ferganocephale belongs to Ornithischia'
- 'Ferganocephale adenticulatum belongs to Ferganocephale'
- 'Gasparinisaura cincosaltensis belongs to Gasparinisaura'
- 'Graciliceratops mongoliensis belongs to Graciliceratops'
- 'Heterodontosaurus tucki belongs to Heterodontosaurus'
- 'Hexinlusaurus belongs to Neornithischia'
- 'Homalocephale calathocercos belongs to Homalocephale'
- 'Hypsilophodon foxii belongs to Hypsilophodon'
- 'Lesothosaurus diagnosticus belongs to Lesothosaurus'
- 'Marginocephalia belongs to Cerapoda'
- 'Neornithischia was reranked as a unranked clade and belongs to Genasauria'
- 'Ornithopoda was reranked as a unranked clade and belongs to Cerapoda'
- 'Orodromeus makelai belongs to Orodromeus'
- 'Protoceratops andrewsi belongs to Protoceratops'
- 'Psittacosaurus mongoliensis belongs to Psittacosaurus'
- 'Psittacosaurus sibiricus [misspelled as Psittacosaurus sibericus] belongs to Psittacosaurus'
- 'Psittacosaurus sinensis belongs to Psittacosaurus'
- 'Scutellosaurus lawleri belongs to Scutellosaurus'
- 'Stegoceras validus is corrected as Stegoceras validum and belongs to Stegoceras'
- 'Stenopelix belongs to Marginocephalia'
- 'Stenopelix valdensis belongs to Stenopelix'
- 'Stormbergia belongs to Neornithischia'
- 'Stormbergia dangershoeki belongs to Stormbergia'
- 'Tenontosaurus tilletti belongs to Tenontosaurus'
- 'Thescelosaurus neglectus belongs to Thescelosaurus'
- 'Thescelosaurus warreni is recombined as Parksosaurus warreni'
- 'Thyreophora was reranked as a unranked clade and belongs to Genasauria'
- 'Wannanosaurus yansiensis belongs to Wannanosaurus'
- 'Yandusaurus multidens is recombined as Hexinlusaurus multidens'
- 'Yaverlandia belongs to Theropoda'
- 'Yaverlandia bitholus belongs to Yaverlandia'
- 'Yinlong downsi belongs to Yinlong'