Opinions from D. B. Norman 2014
- 'Altirhinus belongs to Neoiguanodontia'
- 'Ankylopollexia belongs to Dryomorpha'
- 'Bactrosaurus belongs to Hadrosauromorpha'
- 'Barilium belongs to Iguanodontidae'
- 'Bolong belongs to Iguanodontidae'
- 'Camptosaurus belongs to Ankylopollexia'
- 'Clypeodonta belongs to Ornithopoda'
- 'Dollodon bampingi is a subjective synonym of Mantellisaurus atherfieldensis'
- 'Dryomorpha belongs to Iguanodontia'
- 'Eolambia belongs to Neoiguanodontia'
- 'Equijubus belongs to Neoiguanodontia'
- 'Euhadrosauria belongs to Hadrosauridae'
- 'Hadrosauridae belongs to Hadrosauromorpha'
- 'Hadrosauromorpha belongs to Neoiguanodontia'
- 'Hypselospinus belongs to Neoiguanodontia'
- 'Iguanodon belongs to Iguanodontidae'
- 'Iguanodon atherfieldensis is recombined as Mantellisaurus atherfieldensis'
- 'Iguanodon bernissartensis belongs to Iguanodon'
- 'Iguanodon dawsoni is recombined as Barilium dawsoni'
- 'Iguanodon fittoni is recombined as Hypselospinus fittoni'
- 'Iguanodon hollingtoniensis is a subjective synonym of Hypselospinus fittoni'
- 'Iguanodon seelyi is a subjective synonym of Iguanodon bernissartensis'
- 'Iguanodontia was reranked as a unranked clade and belongs to Clypeodonta'
- 'Iguanodontidae belongs to Neoiguanodontia'
- 'Jinzhousaurus belongs to Iguanodontidae'
- 'Mantellisaurus belongs to Iguanodontidae'
- 'Neoiguanodontia belongs to Ankylopollexia'
- 'Ouranosaurus belongs to Neoiguanodontia'
- 'Probactrosaurus belongs to Neoiguanodontia'
- 'Protohadros belongs to Neoiguanodontia'
- 'Sellacoxa is a subjective synonym of Barilium'
- 'Sellacoxa pauli is a subjective synonym of Barilium dawsoni'
- 'Telmatosaurus belongs to Hadrosauridae'
- 'Tethyshadros belongs to Hadrosauromorpha'
- 'Torilion is an objective synonym of Barilium'
- 'Xuwulong belongs to Neoiguanodontia'