Opinions from D. B. Norman 2004
- 'Albisaurus is a nomen dubium'
- 'Albisaurus scutifer is a nomen dubium'
- 'Altirhinus belongs to Iguanodontoidea'
- 'Altirhinus kurzanovi belongs to Altirhinus'
- 'Ankylopollexia belongs to Dryomorpha'
- 'Anoplosaurus major is a nomen dubium'
- 'Bactrosaurus belongs to Hadrosauridae'
- 'Brachyrophus is a subjective synonym of Camptosaurus'
- 'Brachyrophus altarkansanus is a subjective synonym of Camptosaurus dispar'
- 'Callovosaurus is a nomen dubium'
- 'Camptonotus is a subjective synonym of Camptosaurus'
- 'Camptonotus amplus is recombined as Camptosaurus amplus'
- 'Camptonotus dispar is recombined as Camptosaurus dispar'
- 'Camptosaurus belongs to Ankylopollexia'
- 'Camptosaurus browni is a subjective synonym of Camptosaurus dispar'
- 'Camptosaurus depressus belongs to Camptosaurus'
- 'Camptosaurus inkeyi is a subjective synonym of Zalmoxes robustus'
- 'Camptosaurus leedsi is a nomen dubium'
- 'Camptosaurus medius is a subjective synonym of Camptosaurus dispar'
- 'Camptosaurus nanus is a subjective synonym of Camptosaurus dispar'
- 'Camptosaurus valdensis is a subjective synonym of Valdosaurus canaliculatus'
- 'Craspedodon belongs to Iguanodontoidea'
- 'Craspedodon lonzeensis belongs to Craspedodon'
- 'Cumnoria is a subjective synonym of Camptosaurus'
- 'Draconyx belongs to Ankylopollexia'
- 'Draconyx loureiroi belongs to Draconyx'
- 'Dryomorpha belongs to Iguanodontia'
- 'Dryosauridae belongs to Dryomorpha'
- 'Dryosaurus belongs to Dryosauridae'
- 'Dryosaurus canaliculatus is recombined as Valdosaurus canaliculatus'
- 'Dysalotosaurus is a subjective synonym of Dryosaurus'
- 'Dysalotosaurus lettowvorbecki is recombined as Dryosaurus lettowvorbecki'
- 'Edmontosaurus belongs to Hadrosauridae'
- 'Eolambia belongs to Iguanodontoidea'
- 'Eolambia caroljonesa belongs to Eolambia'
- 'Equijubus belongs to Styracosterna'
- 'Equijubus normani belongs to Equijubus'
- 'Fukuisaurus belongs to Iguanodontoidea'
- 'Fukuisaurus tetoriensis belongs to Fukuisaurus'
- 'Gasparinisaura belongs to Euornithopoda'
- 'Gasparinisaura cincosaltensis belongs to Gasparinisaura'
- 'Gravisaurus is an objective synonym of Lurdusaurus'
- 'Gravisaurus tenerensis belongs to Gravisaurus' according to Chabli 1988
- 'Gravisaurus tenerensis is an objective synonym of Lurdusaurus arenatus'
- 'Hadrosauridae belongs to Iguanodontoidea'
- 'Heterosaurus is a subjective synonym of Iguanodon'
- 'Heterosaurus neocomiensis is a subjective synonym of Iguanodon atherfieldensis'
- 'Hypsilophodon foxii belongs to Hypsilophodon'
- 'Iguanodon belongs to Iguanodontoidea'
- 'Albisaurus albinus is a nomen dubium'
- 'Iguanodon anglicum is corrected as Iguanodon anglicus and belongs to Iguanodon'
- 'Iguanodon atherfieldensis belongs to Iguanodon'
- 'Iguanodon bernissartensis belongs to Iguanodon'
- 'Iguanodon dawsoni belongs to Iguanodon'
- 'Iguanodon exogirarus is a nomen dubium'
- 'Iguanodon fittoni belongs to Iguanodon'
- 'Iguanodon hoggii is recombined as Camptosaurus hoggii'
- 'Iguanodon hollingtoniensis is a subjective synonym of Iguanodon fittoni'
- 'Iguanodon lakotaensis belongs to Iguanodon'
- 'Iguanodon mantelli is a subjective synonym of Iguanodon atherfieldensis'
- 'Iguanodon ottingeri is a nomen dubium'
- 'Iguanodon prestwichii is recombined as Camptosaurus prestwichii'
- 'Iguanodon seelyi is a subjective synonym of Iguanodon bernissartensis'
- 'Iguanodon suessi is a subjective synonym of Rhabdodon priscus'
- 'Iguanodontia was reranked as a unranked clade and belongs to Euornithopoda'
- 'Iguanodontoidea belongs to Styracosterna'
- 'Iguanosaurus is a subjective synonym of Iguanodon'
- 'Jinzhousaurus belongs to Iguanodontoidea'
- 'Jinzhousaurus yangi belongs to Jinzhousaurus'
- 'Kangnasaurus is a nomen dubium'
- 'Kangnasaurus coetzeei is a nomen dubium'
- 'Laosaurus altus is recombined as Dryosaurus altus'
- 'Loncosaurus is a nomen dubium'
- 'Loncosaurus argentinus is a nomen dubium'
- 'Lurdusaurus belongs to Styracosterna'
- 'Lurdusaurus arenatus belongs to Lurdusaurus'
- 'Mochlodon is a subjective synonym of Rhabdodon'
- 'Mochlodon robustum is recombined as Zalmoxes robustus'
- 'Muttaburrasaurus belongs to Iguanodontia'
- 'Muttaburrasaurus langdoni belongs to Muttaburrasaurus'
- 'Nanyangosaurus belongs to Iguanodontoidea'
- 'Nanyangosaurus zhugeii belongs to Nanyangosaurus'
- 'Oligosaurus is a subjective synonym of Rhabdodon'
- 'Oligosaurus adelus is a subjective synonym of Rhabdodon priscus'
- 'Onychosaurus is a subjective synonym of Zalmoxes'
- 'Onychosaurus hungaricus is a subjective synonym of Zalmoxes robustus'
- 'Ornithomerus is a subjective synonym of Rhabdodon'
- 'Ornithomerus gracilis is a subjective synonym of Rhabdodon priscus'
- 'Ouranosaurus belongs to Iguanodontoidea'
- 'Ouranosaurus nigeriensis belongs to Ouranosaurus'
- 'Planicoxa belongs to Dryosauridae'
- 'Planicoxa venenica belongs to Planicoxa'
- 'Polacanthus foxii belongs to Polacanthus'
- 'Probactrosaurus belongs to Iguanodontoidea'
- 'Probactrosaurus alashanicus belongs to Probactrosaurus'
- 'Probactrosaurus gobiensis belongs to Probactrosaurus'
- 'Probactrosaurus mazongshanensis belongs to Probactrosaurus'
- 'Protohadros belongs to Iguanodontoidea'
- 'Protohadros byrdi belongs to Protohadros'
- 'Rabdodon is corrected as Rhabdodon and belongs to Iguanodontia'
- 'Rabdodon priscum is recombined as Rhabdodon priscus'
- 'Rhabdodon septimanicus belongs to Rhabdodon'
- 'Shuangmiaosaurus belongs to Iguanodontoidea'
- 'Shuangmiaosaurus gilmorei belongs to Shuangmiaosaurus'
- 'Sphenospondylus gracilis is a subjective synonym of Iguanodon atherfieldensis'
- 'Styracosterna belongs to Ankylopollexia'
- 'Symphyrophus is a subjective synonym of Camptosaurus'
- 'Symphyrophus musculosus is a subjective synonym of Camptosaurus dispar'
- 'Tenontosaurus belongs to Iguanodontia'
- 'Tenontosaurus dossi belongs to Tenontosaurus'
- 'Tenontosaurus tilletti belongs to Tenontosaurus'
- 'Tichosteus is a nomen dubium'
- 'Tichosteus aequifacies is a nomen dubium'
- 'Tichosteus lucasanus is a nomen dubium'
- 'Valdosaurus belongs to Dryosauridae'
- 'Valdosaurus nigeriensis belongs to Valdosaurus'
- 'Vectisaurus is a subjective synonym of Iguanodon'
- 'Vectisaurus valdensis is a subjective synonym of Iguanodon atherfieldensis'
- 'Yaverlandia bitholus belongs to Yaverlandia'
- 'Zalmoxes belongs to Iguanodontia'
- 'Zalmoxes shqiperorum belongs to Zalmoxes'