Opinions from R. T. Abbott 1974
- 'Acanthochitona belongs to Acanthochitonidae'
- 'Acanthochitonidae belongs to Acanthochitonina'
- 'Acanthochitonina belongs to Neoloricata'
- 'Acanthopleura belongs to Acanthopleurinae'
- 'Acanthopleurinae belongs to Chitonidae'
- 'Acmaeadae is corrected as Acmaeidae and belongs to Archaeogastropoda'
- 'Aletes is a subjective synonym of Serpulorbis'
- 'Amicula belongs to Mopaliidae'
- 'Amphissa belongs to Columbellidae'
- 'Anabathron contabulata belongs to Anabathron' according to Frauenfeld 1867
- 'Anabathron contabulata belongs to Anabathron'
- 'Anabathron muriel belongs to Anabathron' according to Bartsch and Rehder 1939
- 'Anabathron muriel belongs to Anabathron'
- 'Astraea guadalupeana belongs to Astraea' according to Berry 1957
- 'Buccinum was reranked as Tritonium (Buccinum) and belongs to Tritonium' according to Middendorf 1848
- 'Buccinum angulosum belongs to Buccinum' according to Gray 1839
- 'Buccinum angulosum belongs to Buccinum'
- 'Buccinum percrassum belongs to Buccinum' according to Dall 1881
- 'Buccinum percrassum belongs to Buccinum'
- 'Buccinum physeatum belongs to Buccinum' according to Dall 1919
- 'Buccinum physeatum belongs to Buccinum'
- 'Buccinum taurinum is recombined as Terebra taurinus'
- 'Callistochiton belongs to Callistoplacidae'
- 'Callistochiton crassicostatus belongs to Callistochiton' according to Pilsbry 1893
- 'Callistochiton crassicostatus belongs to Callistochiton'
- 'Callistochiton palmulatus belongs to Callistochiton' according to Dall 1879
- 'Callistochiton palmulatus belongs to Callistochiton'
- 'Callistoplacinae is corrected as Callistoplacidae and belongs to Ischnochitonina'
- 'Calloplax belongs to Chaetopleuridae'
- 'Ceratozona belongs to Callistoplacidae'
- 'Chaetopleura belongs to Chaetopleuridae'
- 'Chaetopleuridae belongs to Ischnochitonina'
- 'Chiton belongs to Chitoninae'
- 'Chiton (Tonicia) schrammi belongs to Chiton (Tonicia)' according to Shuttleworth 1856
- 'Chiton (Tonicia) schrammi is recombined as Tonicia schrammi'
- 'Chiton californicus belongs to Chiton' according to Reeve 1847
- 'Chiton californicus is recombined as Nuttallina californica'
- 'Chiton lineatus belongs to Chiton' according to Wood 1815
- 'Chiton lineatus is recombined as Tonicella lineata'
- 'Chiton magdalenensis belongs to Chiton' according to Hinds 1845
- 'Chiton magdalenensis is recombined as Stenoplax magdalenensis'
- 'Chiton marmoreus belongs to Chiton' according to Fabrius 1780
- 'Chiton marmoreus is recombined as Tonicella marmorea'
- 'Chiton pectinatus belongs to Chiton' according to G. B. Sowerby 1840
- 'Chiton pectinatus is recombined as Ischnochiton pectinatus'
- 'Chiton stelleri belongs to Chiton' according to Middendorf 1847
- 'Chiton stelleri is recombined as Cryptochiton stelleri'
- 'Chiton turberculatus belongs to Chiton' according to Linnaeus 1758
- 'Chiton turberculatus belongs to Chiton'
- 'Chitonidae belongs to Ischnochitonina'
- 'Chitoninae belongs to Chitonidae'
- 'Craspedochiton belongs to Acanthochitonidae'
- 'Cryptochiton belongs to Acanthochitonidae'
- 'Cryptoconchus belongs to Acanthochitonidae'
- 'Cyanoplax belongs to Ischnochitonidae'
- 'Dendrochiton was reranked as Mopalia (Dendrochiton) and belongs to Mopalia'
- 'Eratoidae belongs to Cypraeacea'
- 'Fusus ceramidus is recombined as Fusinus ceramidus'
- 'Fusus spitzbergensis belongs to Fusus' according to Reeve 1855
- 'Fusus spitzbergensis is recombined as Colus (Aulacofusus) spitzbergensis'
- 'Gadinia is a subjective synonym of Trimusculus'
- 'Hanleya belongs to Hanleyidae'
- 'Hanleyidae belongs to Lepidopleurina'
- 'Hexaplex was reranked as Murex (Hexaplex) and belongs to Murex'
- 'Ischnochiton belongs to Ischnochitonidae'
- 'Ischnochiton (Lepidozona) pectinulatus belongs to Ischnochiton (Lepidozona)' according to Carpenter 1893
- 'Ischnochiton (Stenosemus) belongs to Ischnochiton'
- 'Ischnochiton acrior belongs to Ischnochiton' according to Carpenter 1892
- 'Ischnochiton acrior is a subjective synonym of Stenoplax magdalenensis'
- 'Ischnochiton sanctaemonicae is recombined as Ischnochiton (Lepidozona) sanctaemonicae' according to Dickerson 1921
- 'Ischnochiton sanctaemonicae belongs to Ischnochiton' according to Valentine 1956
- 'Ischnochiton sanctaemonicae belongs to Ischnochiton' according to S. S. Berry 1911
- 'Ischnochitonidae belongs to Ischnochitonina'
- 'Ischnochitonina was reranked as a suborder and belongs to Neoloricata'
- 'Katharina belongs to Mopaliidae'
- 'Kelletia belongs to Buccinidae'
- 'Lepidochiton is a subjective synonym of Lepidopleurus'
- 'Lepidochitona belongs to Ischnochitonidae'
- 'Lepidochitona keepiana belongs to Lepidochitona' according to S. S. Berry 1948
- 'Lepidochitona keepiana belongs to Lepidochitona'
- 'Lepidopleuridae belongs to Lepidopleurina'
- 'Lepidopleurina belongs to Neoloricata'
- 'Lepidopleurus belongs to Lepidopleuridae'
- 'Lepidozona was reranked as Ischnochiton (Lepidozona) and belongs to Ischnochiton' according to Dickerson 1921
- 'Lepidozona belongs to Ischnochitonidae'
- 'Linga belongs to Lucinidae'
- 'Lottia belongs to Patellidae'
- 'Lucina (Here) was reranked as Linga (Here) and belongs to Linga'
- 'Lucinacea belongs to Veneroida'
- 'Lucinidae belongs to Lucinacea'
- 'Lutrariinae belongs to Mactridae'
- 'Mangeliinae belongs to Turridae'
- 'Mangilia is corrected as Mangelia and belongs to Mangeliinae'
- 'Martesiinae belongs to Pholadidae'
- 'Maugerella conspicua is recombined as Ischnochiton (Stenoradsia) conspicuus' according to Pilsbry 1892
- 'Maugerella conspicua is recombined as Stenoplax conspicua'
- 'Maxwellia belongs to Muricinae'
- 'Mopalia belongs to Mopaliidae'
- 'Mopaliidae belongs to Ischnochitonina'
- 'Murex (Muricidea) barbarensis is recombined as Ocenebra barbarensis'
- 'Murex fulvescens belongs to Murex' according to Sowerby 1834
- 'Murex fulvescens is recombined as Murex (Hexaplex) fulvescens'
- 'Murex pomum belongs to Murex'
- 'Murex salmo is recombined as Pleuroploca salmo'
- 'Muricidae belongs to Muricacea'
- 'Muricinae belongs to Muricidae'
- 'Neoloricata belongs to Polyplacophora'
- 'Nuttallina belongs to Callistoplacidae'
- 'Oldroydia belongs to Lepidopleuridae'
- 'Patellidae belongs to Archaeogastropoda'
- 'Pecten phrygium is recombined as Aequipecten phrygium'
- 'Penitella belongs to Martesiinae'
- 'Pholadinae belongs to Pholadidae'
- 'Pitarinae belongs to Veneridae'
- 'Placiphorella belongs to Mopaliidae'
- 'Pseudomelatoma belongs to Pseudomelatominae'
- 'Pseudomelatominae belongs to Turridae'
- 'Puncturella belongs to Emarginulinae'
- 'Puncturella longifissa belongs to Puncturella'
- 'Puncturella longifissa belongs to Puncturella' according to Dall 1914
- 'Puncturella multistriata belongs to Puncturella' according to Dall 1914
- 'Puncturella multistriata belongs to Puncturella'
- 'Pusula was reranked as Trivia (Pusula) and belongs to Trivia'
- 'Ranella californica is recombined as Bursa (Crossata) californica'
- 'Rhombichiton is a subjective synonym of Lepidopleurus'
- 'Rhombochiton was reranked as Ischnochiton (Rhombochiton) and belongs to Ischnochiton'
- 'Saxidomus belongs to Pitarinae'
- 'Schizothaerus is a subjective synonym of Tresus'
- 'Scobinopholas was reranked as Cyrtopleura (Scobinopholas) and belongs to Cyrtopleura'
- 'Stenoplax belongs to Ischnochitonidae'
- 'Stenoradsia was reranked as Stenoplax (Stenoradsia) and belongs to Stenoplax'
- 'Stenoradsia was reranked as Ischnochiton (Stenoradsia) and belongs to Ischnochiton' according to Pilsbry 1892
- 'Tegula belongs to Monodontinae'
- 'Tonicella belongs to Ischnochitonidae'
- 'Tonicia was reranked as Chiton (Tonicia) and belongs to Chiton' according to Shuttleworth 1856
- 'Tonicia belongs to Chitoninae'
- 'Transennella stimpsoni belongs to Transennella' according to Dall 1902
- 'Tresus belongs to Lutrariinae'
- 'Trimusculidae belongs to Siphonariacea'
- 'Triton maoritinctus is recombined as Cymatium (Ranularia) maoritinctum'
- 'Tritonium (Buccinum) ochotense is recombined as Buccinum ochotense'
- 'Tritonium (Buccinum) ochotense belongs to Tritonium (Buccinum)' according to Middendorf 1848
- 'Trivia belongs to Triviinae'
- 'Triviinae belongs to Eratoidae'
- 'Trochus gibberosus belongs to Trochus' according to Dillwyn 1817
- 'Trochus gibberosus is recombined as Astraea (Pomaulax) gibberosa'
- 'Trochus ligatus is recombined as Calliostoma ligatum'
- 'Veneroida belongs to Heterodonta'
- 'Venus borealis is recombined as Astarte (Tridonta) borealis'
- 'Vitrinella belongs to Vitrinellinae'
- 'Vitrinellinae belongs to Vitrinellidae'
- 'Zirfaea belongs to Pholadinae'