Opinions from D. B. Norman and D. B. Weishampel 1990
- 'Albisaurus is a nomen dubium'
- 'Albisaurus scutifer is a nomen dubium'
- 'Ankylopollexia belongs to Iguanodontia'
- 'Anoplosaurus is a nomen dubium'
- 'Anoplosaurus curtonotus is a nomen dubium'
- 'Anoplosaurus major is a nomen dubium'
- 'Brachyrophus is a subjective synonym of Camptosaurus'
- 'Brachyrophus altarkansanus is a subjective synonym of Camptosaurus dispar'
- 'Callovosaurus is a nomen dubium'
- 'Camptonotus amplus is recombined as Camptosaurus amplus'
- 'Camptonotus dispar is recombined as Camptosaurus dispar'
- 'Camptosauridae belongs to Ankylopollexia'
- 'Camptosaurus belongs to Camptosauridae'
- 'Camptosaurus browni is a subjective synonym of Camptosaurus dispar'
- 'Camptosaurus depressus belongs to Camptosaurus'
- 'Camptosaurus inkeyi is a subjective synonym of Rhabdodon priscus'
- 'Camptosaurus leedsi is a nomen dubium'
- 'Camptosaurus medius is a subjective synonym of Camptosaurus dispar'
- 'Camptosaurus nanus is a subjective synonym of Camptosaurus medius'
- 'Craspedodon belongs to Iguanodontia'
- 'Craspedodon lonzeensis belongs to Craspedodon'
- 'Eucercosaurus is a nomen dubium'
- 'Eucercosaurus tanyspondylus is a nomen dubium'
- 'Heterosaurus is a subjective synonym of Iguanodon'
- 'Heterosaurus neocomiensis is a subjective synonym of Iguanodon atherfieldensis'
- 'Iguanodon belongs to Iguanodontidae'
- '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 exogirarum is a nomen dubium'
- 'Iguanodon fittoni belongs to Iguanodon'
- 'Iguanodon hoggii belongs to Iguanodon'
- '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 suessii is a subjective synonym of Rhabdodon priscus'
- 'Iguanodontidae belongs to Ankylopollexia'
- 'Iguanosaurus is a subjective synonym of Iguanodon'
- 'Loncosaurus is a nomen dubium'
- 'Loncosaurus argentinus is a nomen dubium'
- 'Mochlodon is a subjective synonym of Rhabdodon'
- 'Mochlodon robustum is a subjective synonym of Rhabdodon priscus'
- 'Muttaburrasaurus belongs to Iguanodontia'
- 'Muttaburrasaurus langdoni belongs to Muttaburrasaurus'
- 'Oligosaurus is a subjective synonym of Rhabdodon'
- 'Oligosaurus adelus is a subjective synonym of Rhabdodon priscus'
- 'Onychosaurus is a subjective synonym of Rhabdodon'
- 'Onychosaurus hungaricus is a subjective synonym of Rhabdodon priscus'
- 'Ornithomerus is a subjective synonym of Rhabdodon'
- 'Ornithomerus gracilis is a subjective synonym of Rhabdodon priscus'
- 'Ouranosaurus belongs to Iguanodontidae'
- 'Ouranosaurus nigeriensis belongs to Ouranosaurus'
- 'Probactrosaurus alashanicus belongs to Probactrosaurus'
- 'Probactrosaurus gobiensis belongs to Probactrosaurus'
- 'Rabdodon is corrected as Rhabdodon and belongs to Iguanodontia'
- 'Rabdodon priscum is recombined as Rhabdodon priscus'
- 'Sphenospondylus gracilis is a subjective synonym of Iguanodon atherfieldensis'
- 'Symphyrophus is a subjective synonym of Camptosaurus'
- 'Symphyrophus musculosus is a subjective synonym of Camptosaurus dispar'
- 'Tichosteus is a nomen dubium'
- 'Tichosteus aequifacies is a nomen dubium'
- 'Tichosteus lucasanus is a nomen dubium'
- 'Vectisaurus valdensis is a subjective synonym of Iguanodon atherfieldensis'