Opinions from P. Jeffery 2003
- 'Acmaeadae is corrected as Acmaeidae and belongs to Acmaeoidea'
- 'Amberleyidae belongs to Trochidae'
- 'Ampullospirinae was reranked as the family Ampullospiridae and belongs to Ampullinidae'
- 'Annulariidae belongs to Pomatiasidae'
- 'Anomphalidae belongs to Euomphaloidea'
- 'Asterophilidae belongs to Eulimidae'
- 'Atlantacea belongs to Carinarioidea'
- 'Buccinidae belongs to Buccinoidea'
- 'Calyptraeoidea belongs to Littorinimorpha'
- 'Campaniloidea belongs to Cerithiimorpha'
- 'Capuloidea belongs to Littorinimorpha'
- 'Carinarioidea belongs to Littorinimorpha'
- 'Cerithiacea is corrected as Cerithioidea and belongs to Cerithiimorpha'
- 'Cerithiimorpha belongs to Sorbeoconcha'
- 'Chondropomatidae belongs to Pomatiasidae'
- 'Cingulopsoidea belongs to Littorinimorpha'
- 'Cirridae belongs to Trochidae'
- 'Cliospiridae belongs to Onychochiloidea'
- 'Cocculiniformia belongs to Orthogastropoda'
- 'Cocculinoidea belongs to Cocculiniformia'
- 'Codonocheilidae belongs to Craspedostomatoidea'
- 'Columbellidae belongs to Buccinoidea'
- 'Craspedostomatacea is corrected as Craspedostomatoidea and belongs to Architaenioglossa'
- 'Craspedostomatidae belongs to Craspedostomatoidea'
- 'Cypraeacea is corrected as Cypraeoidea and belongs to Littorinimorpha'
- 'Docoglossa belongs to Eogastropoda'
- 'Elasmonematidae belongs to Microdomatoidea'
- 'Ellobiacea belongs to Melampoidea'
- 'Ellobiidae is a subjective synonym of Melampidae'
- 'Eogastropoda belongs to Gastropoda'
- 'Eotomariidae belongs to Eotomarioidea'
- 'Eotomarioidea belongs to Murchisoniina'
- 'Eratoidae belongs to Triviidae'
- 'Euomphalacea is corrected as Euomphaloidea and belongs to Euomphalina'
- 'Euomphalina belongs to Eogastropoda'
- 'Fasciolariidae belongs to Buccinoidea'
- 'Ficidae belongs to Ficoidea'
- 'Ficoidea belongs to Littorinimorpha'
- 'Firolidae belongs to Pterotracheidae'
- 'Fossaridae is a subjective synonym of Planaxidae'
- 'Ganatidae belongs to Rhodopidae'
- 'Gascoignellidae belongs to Platyhedylidae'
- 'Haliotidae belongs to Haliotoidea'
- 'Haliotoidea belongs to Vetigastropoda'
- 'Helicotominae was reranked as the family Helicotomidae and belongs to Euomphaloidea'
- 'Heterobranchia belongs to Orthogastropoda'
- 'Holopeidae belongs to Euomphaloidea'
- 'Lacunidae is a subjective synonym of Littorinidae'
- 'Laubierinidae belongs to Laubierinoideae'
- 'Laubierinoidea belongs to Littorinimorpha'
- 'Lepetelloidea belongs to Cocculiniformia'
- 'Lepetidae belongs to Acmaeoidea'
- 'Lepetopsina belongs to Docoglossa'
- 'Littorinacea is corrected as Littorinoidea and belongs to Littorinimorpha'
- 'Lophospiridae belongs to Lophospiroidea'
- 'Lophospiroidea belongs to Murchisoniina'
- 'Loxonematacea is corrected as Loxonematoidea and belongs to Murchisoniina'
- 'Luciellidae belongs to Eotomarioidea'
- 'Maclureadae is corrected as Macluritidae and belongs to Macluritoidea'
- 'Macluritoidea belongs to Euomphalina'
- 'Melampidae belongs to Melampoidea'
- 'Melampoidea belongs to Pulmonata'
- 'Melanellidae belongs to Eulimidae'
- 'Melongenidae belongs to Buccinoidea'
- 'Microdomatacea is corrected as Microdomatoidea and belongs to Vetigastropoda'
- 'Microdomatidae belongs to Microdomatoidea'
- 'Murchisoniacea is corrected as Murchisonioidea and belongs to Murchisoniina'
- 'Murchisoniina belongs to Orthogastropoda'
- 'Nacellina belongs to Docoglossa'
- 'Nassariidae belongs to Buccinoidea'
- 'Naticacea is corrected as Naticoidea and belongs to Littorinimorpha'
- 'Neomphalida belongs to Eogastropoda'
- 'Nerineoidea belongs to Heterobranchia'
- 'Neritacea belongs to Neritoida'
- 'Neritoida belongs to Neritopsina'
- 'Neritopsina belongs to Orthogastropoda'
- 'Obtortionidae is a subjective synonym of Scaliolidae'
- 'Omphalocirridae belongs to Onychochiloidea'
- 'Omphalotrochidae belongs to Euomphaloidea'
- 'Onychochilidae belongs to Onychochiloidea'
- 'Oriostomatacea is corrected as Oriostomatoidea and belongs to Vetigastropoda'
- 'Oriostomatidae belongs to Oriostomatoidea'
- 'Orthogastropoda belongs to Gastropoda'
- 'Paedophoropodidae belongs to Eulimidae'
- 'Paladmetidae belongs to Cancellarioidea'
- 'Palaeotrochacea belongs to Neritopsina'
- 'Paraturbinidae belongs to Palaeotrochacea'
- 'Patellidae belongs to Patelloidea'
- 'Patellogastropoda is a subjective synonym of Docoglossa'
- 'Phanerotrematidae belongs to Eotomarioidea'
- 'Phasianellidae belongs to Turbinidae'
- 'Pisanianuridae belongs to Laubierinoideae'
- 'Plakobranchidae belongs to Elysiidae'
- 'Platyacridae belongs to Trochidae'
- 'Platyceratacea belongs to Euomphalina'
- 'Platyceratidae belongs to Platyceratacea'
- 'Poleumitidae belongs to Euomphaloidea'
- 'Porcelliidae belongs to Trochidae'
- 'Pseudophoridae belongs to Euomphaloidea'
- 'Pterotracheidae belongs to Carinarioidea'
- 'Raphistomidae is corrected as Raphistomatidae and belongs to Euomphaloidea'
- 'Rissooidea belongs to Littorinimorpha'
- 'Siliquariidae belongs to Tenagodidae'
- 'Sinuopeidae belongs to Eogastropoda'
- 'Siphonariidae belongs to Siphonarioidea'
- 'Stiliferidae belongs to Eulimidae'
- 'Stomatiidae belongs to Trochidae'
- 'Strombacea is corrected as Stromboidea and belongs to Littorinimorpha'
- 'Stylommatophora belongs to Pulmonata'
- 'Symmetrocapuloidea belongs to Neritoida'
- 'Tenagodidae belongs to Cerithioidea'
- 'Tonnacea is corrected as Tonnoidea and belongs to Littorinimorpha'
- 'Trachysmidae belongs to Pendromidae'
- 'Trichotropidae belongs to Capuloidea'
- 'Trochaclididae belongs to Trochidae'
- 'Trochonematidae belongs to Lophospiroidea'
- 'Tubinidae belongs to Oriostomatoidea'
- 'Turbinellidae belongs to Buccinoidea'
- 'Vanikoroidea belongs to Littorinimorpha'
- 'Velutinoidea belongs to Littorinimorpha'
- 'Vermetoidea belongs to Littorinimorpha'
- 'Weeksiidae belongs to Hypsogastropoda'
- 'Xenophoroidea belongs to Littorinimorpha'