Opinions from W.O. Addicott 1970
- 'Acteocinidae belongs to Tectibranchia'
- 'Acteon belongs to Acteonidae'
- 'Acteon (Rictaxis) weaveri belongs to Acteon (Rictaxis)'
- 'Acteon boulderana belongs to Acteon' according to Etherington 1931
- 'Acteon boulderana is corrected as Acteon boulderanus and belongs to Acteon'
- 'Acteonidae belongs to Tectibranchia'
- 'Agasoma (Trophosycon) kernianum is recombined as Ficus (Trophosycon) kerniana'
- 'Agasoma barkerianum is recombined as Bruclarkia barkeriana'
- 'Agasoma santacruzana is a subjective synonym of Bruclarkia barkeriana'
- 'Agasoma stanfordensis is a subjective synonym of Ficus (Trophosycon) kerniana'
- 'Agasoma yaquinanum is recombined as Bruclarkia yaquinana'
- 'Agathotoma was reranked as Mangelia (Agathotoma) and belongs to Mangelia'
- 'Akeridae belongs to Tectibranchia'
- 'Amphissa posunculensis is recombined as Antillophos posunculensis'
- 'Anachis belongs to Columbellidae'
- 'Anachis watsonae is recombined as Anachis (Costoanachis) watsonae'
- 'Antillophos belongs to Buccinidae'
- 'Antillophos woodringi belongs to Antillophos'
- 'Archaeogastropoda belongs to Gastropoda'
- 'Argobuccinum dilleri is recombined as Mediargo dilleri'
- 'Astraea belongs to Turbinidae'
- 'Astraea morani is a subjective synonym of Astraea (Pomaulax) biangulata'
- 'Astralium raymondi is a subjective synonym of Astraea (Pomaulax) biangulata'
- 'Austrotrophon was reranked as Trophon (Austrotrophon) and belongs to Trophon'
- 'Balcis belongs to Eulimidae'
- 'Balcis conchita belongs to Balcis'
- 'Balcis lutzi belongs to Balcis'
- 'Balcis petrolia belongs to Balcis'
- 'Barkeria was reranked as Cancellaria (Barkeria) and belongs to Cancellaria'
- 'Bathytoma condonana is recombined as Megasurcula condonana'
- 'Batillaria belongs to Cerithiidae'
- 'Besla was reranked as Odostomia (Besla) and belongs to Odostomia'
- 'Bittium belongs to Cerithiidae'
- 'Bittium trampasensis is a subjective synonym of Bittium topangensis'
- 'Bruclarkia belongs to Neptuneidae'
- 'Buccinidae belongs to Neogastropoda'
- 'Buccinum aethiops belongs to Buccinum' according to Reeve 1847
- 'Buccinum aethiops is recombined as Macron aethiops'
- 'Bulla belongs to Bullidae'
- 'Bulla cantuaensis belongs to Bulla'
- 'Bulla jugularis is recombined as Scaphander jugularis'
- 'Bulla virescens belongs to Bulla' according to Sowerby 1833
- 'Bulla virescens is recombined as Haminoea virescens'
- 'Bullia (Molopophorus) was reranked as Molopophorus and belongs to Buccinidae'
- 'Bullia (Molopophorus) anglonana is recombined as Molopophorus anglonana'
- 'Bullidae belongs to Tectibranchia'
- 'Bullina belongs to Acteonidae'
- 'Calicantharus belongs to Neptuneidae'
- 'Calliostoma belongs to Trochidae'
- 'Calliostoma bicarinatum is a subjective synonym of Astraea (Pomaulax) biangulata'
- 'Calliostoma carsoni belongs to Calliostoma'
- 'Calliostoma obliquistriata is a subjective synonym of Astraea (Pomaulax) biangulata'
- 'Calyptraea belongs to Calyptraeidae'
- 'Calyptraea coreyi belongs to Calyptraea'
- 'Calyptraeidae belongs to Mesogastropoda'
- 'Cancellaria belongs to Cancellariidae'
- 'Cancellaria (Crawfordina) kernensis belongs to Cancellaria (Crawfordina)'
- 'Cancellaria (Euclia) circumspinosa belongs to Cancellaria (Euclia)'
- 'Cancellaria (Euclia) ocoyana belongs to Cancellaria (Euclia)'
- 'Cancellaria (Narona) birchi belongs to Cancellaria (Narona)'
- 'Cancellaria (Pyruclia) belongs to Cancellaria'
- 'Cancellaria andersoni belongs to Cancellaria' according to Clark 1918
- 'Cancellaria andersoni is a subjective synonym of Cancellaria (Euclia) oregonensis'
- 'Cancellaria condoni is recombined as Cancellaria (Euclia) condoni'
- 'Cancellaria dalliana is recombined as Cancellaria (Euclia) dalliana'
- 'Cancellaria galei belongs to Cancellaria'
- 'Cancellaria joaquinensis is recombined as Cancellaria (Euclia) joaquinensis'
- 'Cancellaria keenae belongs to Cancellaria'
- 'Cancellaria lickana is recombined as Cancellaria (Pyruclia) lickana'
- 'Cancellaria nevadensis is recombined as Cancellaria (Euclia) nevadensis'
- 'Cancellaria oregonensis is recombined as Cancellaria (Euclia) oregonensis'
- 'Cancellaria pacifica is recombined as Cancellaria (Euclia) pacifica'
- 'Cancellaria posunculensis is recombined as Cancellaria (Coptostoma) posunculensis'
- 'Cancellaria ramonensis is a subjective synonym of Cancellaria (Euclia) oregonensis'
- 'Cancellaria sanjosei is recombined as Cancellaria (Barkeria) sanjosei'
- 'Cancellaria simplex is recombined as Cancellaria (Euclia) simplex'
- 'Cancellariidae belongs to Neogastropoda'
- 'Cerithiadae is corrected as Cerithiidae and belongs to Mesogastropoda'
- 'Cerithiopsidae belongs to Mesogastropoda'
- 'Cerithiopsis belongs to Cerithiopsidae'
- 'Cerithiopsis turneri is a subjective synonym of Bittium topangensis'
- 'Cerithium arnoldi is a subjective synonym of Bittium topangensis'
- 'Cerithium mediale belongs to Cerithium' according to Conrad 1849
- 'Cerithium topangensis is recombined as Bittium topangensis'
- 'Chelyconus was reranked as Conus (Chelyconus) and belongs to Conus'
- 'Chemnitzia was reranked as Turbonilla (Chemnitzia) and belongs to Turbonilla'
- 'Chlorostoma (Omphalius) dalli is recombined as Tegula (Omphalius) dalli'
- 'Chrysallida was reranked as Odostomia (Chrysallida) and belongs to Odostomia'
- 'Chrysallida rotundomontana belongs to Chrysallida' according to Keen 1943
- 'Chrysallida rotundomontana is recombined as Odostomia (Besla) rotundomontana'
- 'Chrysodomus kernensis is recombined as Calicantharus kernensis'
- 'Cirsotrema was reranked as Epitonium (Cirsotrema) and belongs to Epitonium'
- 'Clavinae belongs to Turridae'
- 'Columbellidae belongs to Neogastropoda'
- 'Columbellopsis was reranked as Mitrella (Columbellopsis) and belongs to Mitrella'
- 'Conidae belongs to Neogastropoda'
- 'Conus belongs to Conidae'
- 'Conus (Lithoconus) belongs to Conus'
- 'Conus hayesi is recombined as Conus (Lithoconus) hayesi'
- 'Conus oweniana is recombined as Conus (Chelyconus) owenianus'
- 'Coptostoma was reranked as Cancellaria (Coptostoma) and belongs to Cancellaria'
- 'Costoanachis was reranked as Anachis (Costoanachis) and belongs to Anachis'
- 'Crassispira belongs to Clavinae'
- 'Crassispira olcesensis belongs to Crassispira'
- 'Crawfordina was reranked as Cancellaria (Crawfordina) and belongs to Cancellaria'
- 'Crepidula belongs to Crepidulidae'
- 'Crepidula bractea belongs to Crepidula'
- 'Crepidula princeps belongs to Crepidula'
- 'Crepidulidae belongs to Mesogastropoda'
- 'Crucibulum belongs to Calyptraeidae'
- 'Crucibulum (Dispotaea) papulum belongs to Crucibulum (Dispotaea)'
- 'Crypta rostralis belongs to Crypta' according to Conrad 1865
- 'Crypta rostralis is recombined as Crepidula rostralis'
- 'Cylichna belongs to Acteocinidae'
- 'Cylichna loismartinae belongs to Cylichna' according to Keen 1943
- 'Cylichna loismartinae belongs to Cylichna'
- 'Cylichna temblorensis belongs to Cylichna' according to Keen 1943
- 'Cylichna temblorensis belongs to Cylichna'
- 'Cymatiidae belongs to Mesogastropoda'
- 'Cymatium belongs to Cymatiidae'
- 'Diodora belongs to Fissurellidae'
- 'Diodora (Diodora) belongs to Diodora'
- 'Dispotaea was reranked as Crucibulum (Dispotaea) and belongs to Crucibulum'
- 'Drillia antiselli is recombined as Xenuroturris antiselli'
- 'Drillia buwaldana is recombined as Turricula bulwaldana'
- 'Drillia ochsneri is recombined as Turricula ochsneri'
- 'Drillia ocoyana is recombined as Batillaria ocoyana'
- 'Drillia temblorensis is recombined as Ophiodermella temblorensis'
- 'Drillia wilsoni is a subjective synonym of Turricula ochsneri'
- 'Epitoniidae belongs to Mesogastropoda'
- 'Epitonium belongs to Epitoniidae'
- 'Epitonium (Cirsotrema) clallamense belongs to Epitonium (Cirsotrema)'
- 'Epitonium (Gyroscala) barkerianum belongs to Epitonium (Gyroscala)'
- 'Epitonium (Nitidiscala) tedfordi belongs to Epitonium (Nitidiscala)'
- 'Epitonium pasoense belongs to Epitonium' according to Anderson and Martin 1914
- 'Epitonium pasoense is recombined as Epitonium (Cirsotrema) pasoense'
- 'Epitonium williamsoni is recombined as Opalia (Rugatiscala) williamsoni'
- 'Euclia was reranked as Cancellaria (Euclia) and belongs to Cancellaria'
- 'Eulima belongs to Eulimidae'
- 'Eulimella gabbiana is recombined as Eulima gabbiana'
- 'Eulimella ochsneri is recombined as Pyramidella (Syrnola) ochsneri'
- 'Eulimidae belongs to Mesogastropoda'
- 'Evalea was reranked as Odostomia (Evalea) and belongs to Odostomia'
- 'Ferminoscala durhami is recombined as Scalina durhami'
- 'Ferminoscala whitei is recombined as Scalina whitei'
- 'Ficidae belongs to Mesogastropoda'
- 'Ficus belongs to Ficidae'
- 'Ficus nodiferus is a subjective synonym of Ficus (Trophosycon) kerniana'
- 'Fissurellidae belongs to Archaeogastropoda'
- 'Forreria belongs to Muricidae'
- 'Forreria cancellaroides belongs to Forreria' according to Arnold 1909
- 'Forreria cancellaroides belongs to Forreria'
- 'Forreria emersoni belongs to Forreria'
- 'Fossarus dalli is recombined as Cancellaria dalli'
- 'Fusininae was reranked as the family Fusinidae and belongs to Neogastropoda'
- 'Fusoterebra was reranked as Terebra (Fusoterebra) and belongs to Terebra'
- 'Fusus (Hemifusus) wilkesana is recombined as Ocenebra wilkesana'
- 'Fusus geniculus belongs to Fusus' according to Conrad 1849
- 'Fusus geniculus is recombined as Priscofusus geniculus'
- 'Fusus oregonensis belongs to Fusus' according to Conrad 1848
- 'Fusus oregonensis is recombined as Bruclarkia oregonensis'
- 'Gibbula belongs to Trochidae'
- 'Gibbula (Tumulus) baileyi belongs to Gibbula (Tumulus)'
- 'Glossaulax was reranked as Neverita (Glossaulax) and belongs to Neverita'
- 'Glyphostoma belongs to Mangeliinae'
- 'Glyphostoma carinata belongs to Glyphostoma'
- 'Gyroscala was reranked as Epitonium (Gyroscala) and belongs to Epitonium'
- 'Haminoea belongs to Akeridae'
- 'Hastula belongs to Terebridae'
- 'Hastula gnomon belongs to Hastula'
- 'Kelletia belongs to Neptuneidae'
- 'Kelletia lorata belongs to Kelletia'
- 'Knefastia belongs to Turriculinae'
- 'Knefastia garcesana belongs to Knefastia'
- 'Lacuna belongs to Launidae'
- 'Lacuna carpenteri belongs to Lacuna'
- 'Lacunidae [misspelled as Launidae] belongs to Mesogastropoda'
- 'Longchaeus was reranked as Pyramidella (Longchaeus) and belongs to Pyramidella'
- 'Macron belongs to Buccinidae'
- 'Mangelia (Notocytharella) hartensis belongs to Mangelia (Notocytharella)'
- 'Mangeliinae belongs to Turridae'
- 'Mangilia is corrected as Mangelia and belongs to Mangeliinae'
- 'Mangilia howei is recombined as Mangelia (Agathotoma) howei'
- 'Mangilia kernensis is recombined as Mangelia (Notocytharella) kernensis'
- 'Mediargo belongs to Cymatiidae'
- 'Megasurcula belongs to Turriculinae'
- 'Megasurcula howei belongs to Megasurcula' according to Hanna and Hertlein 1938
- 'Megasurcula howei belongs to Megasurcula'
- 'Menestho was reranked as Odostomia (Menestho) and belongs to Odostomia'
- 'Mesogastropoda belongs to Gastropoda'
- 'Miopleiona was reranked as Psephaea (Miopleiona) and belongs to Psephaea'
- 'Miopleiona scowensis is a subjective synonym of Psephaea (Miopleiona) weaveri'
- 'Miopleiona weaveri is recombined as Psephaea (Miopleiona) weaveri'
- 'Miopleiona weaveri belongs to Miopleiona' according to Tegland 1933
- 'Mitra belongs to Mitridae'
- 'Mitra (Atrimitra) belongs to Mitra'
- 'Mitra (Atrimitra) andersoni belongs to Mitra (Atrimitra)'
- 'Mitrella belongs to Columbellidae'
- 'Mitrella (Columbellopsis) alta belongs to Mitrella (Columbellopsis)'
- 'Mitrella anchuela belongs to Mitrella' according to Keen 1943
- 'Mitrella anchuela belongs to Mitrella'
- 'Mitridae belongs to Neogastropoda'
- 'Moniliopsis electilis is recombined as Ophiodermella electilis'
- 'Morula belongs to Thaisidae'
- 'Morula (Morunella) granti belongs to Morula (Morunella)'
- 'Morunella was reranked as Morula (Morunella) and belongs to Morula'
- 'Murex (Ceratostoma) was reranked as Ceratostoma and belongs to Muricidae'
- 'Muricidae belongs to Neogastropoda'
- 'Narona was reranked as Cancellaria (Narona) and belongs to Cancellaria'
- 'Nassa arnoldi is recombined as Nassarius (Catilon) arnoldi'
- 'Nassa ocoyana is recombined as Nassarius (Phrontis) ocoyanus'
- 'Nassariidae belongs to Neogastropoda'
- 'Nassarius belongs to Nassariidae'
- 'Nassarius (Catilon) belongs to Nassarius'
- 'Nassarius (Catilon) smooti belongs to Nassarius (Catilon)' according to W. O. Addicott 1965
- 'Nassarius (Catilon) smooti is recombined as Nassarius (Phrontis) smooti'
- 'Nassarius (Phrontis) harrellensis belongs to Nassarius (Phrontis)'
- 'Nassarius (Phrontis) posoensis belongs to Nassarius (Phrontis)'
- 'Natica belongs to Naticinae'
- 'Natica (Natica) belongs to Natica'
- 'Natica (Neverita) recluziana andersoni is recombined as Neverita (Glossaulax) andersoni'
- 'Natica posuncula belongs to Natica' according to Hanna and Hertlein 1938
- 'Natica posuncula is recombined as Natica (Naticarius) posuncula'
- 'Natica teglandi belongs to Natica' according to Hanna and Hertlein 1938
- 'Natica teglandi is recombined as Natica (Natica) teglandae'
- 'Naticarius was reranked as Natica (Naticarius) and belongs to Natica'
- 'Naticidae belongs to Mesogastropoda'
- 'Naticinae belongs to Naticidae'
- 'Neogastropoda belongs to Gastropoda'
- 'Neptuneidae belongs to Neogastropoda'
- 'Nerita belongs to Neritidae'
- 'Nerita (Theliostyla) belongs to Nerita'
- 'Nerita (Theliostyla) joaquinensis belongs to Nerita (Theliostyla)'
- 'Neritidae belongs to Archaeogastropoda'
- 'Neverita belongs to Polinicinae'
- 'Neverita (Glossaulax) jamesae belongs to Neverita (Glossaulax)'
- 'Niso belongs to Eulimidae'
- 'Niso antiselli belongs to Niso'
- 'Niso cottonwoodensis belongs to Niso'
- 'Nitidiscala was reranked as Epitonium (Nitidiscala) and belongs to Epitonium'
- 'Notocytharella was reranked as Mangelia (Notocytharella) and belongs to Mangelia'
- 'Nucella was reranked as Thais (Nucella) and belongs to Thais'
- 'Ocenebra belongs to Muricidae'
- 'Ocenebra clarki belongs to Ocenebra'
- 'Ocinebra topangensis is recombined as Ocenebra topangensis'
- 'Odostomia belongs to Pyramidellidae'
- 'Odostomia (Chrysallida) sequoiana belongs to Odostomia (Chrysallida)'
- 'Odostomia (Evalea) andersoni belongs to Odostomia (Evalea)' according to W. O. Bartsch and Hertlein 1917
- 'Odostomia (Evalea) andersoni belongs to Odostomia (Evalea)'
- 'Odostomia (Menestho) repenningi belongs to Odostomia (Menestho)'
- 'Oliva belongs to Olividae'
- 'Oliva (Oliva) belongs to Oliva'
- 'Oliva californica is recombined as Oliva (Oliva) californica'
- 'Oliva simondsi is a subjective synonym of Oliva (Oliva) californica'
- 'Olivella belongs to Olividae'
- 'Olivella (Olivella) belongs to Olivella'
- 'Olivella ischnon belongs to Olivella' according to Keen 1943
- 'Olivella ischnon is recombined as Olivella (Olivella) ischnon'
- 'Olividae belongs to Neogastropoda'
- 'Omphalius was reranked as Tegula (Omphalius) and belongs to Tegula'
- 'Opalia belongs to Epitoniidae'
- 'Ophiodermella belongs to Clavinae'
- 'Pachypoma biangulata is recombined as Astraea (Pomaulax) biangulata'
- 'Phrontis was reranked as Nassarius (Phrontis) and belongs to Nassarius'
- 'Pleurotoma (Bathytoma) keepi is recombined as Megasurcula keepi'
- 'Pleurotoma (Bathytoma) piercei is recombined as Turricula piercei'
- 'Pleurotoma (Clathurella) dumblei is a subjective synonym of Antillophos posunculensis'
- 'Polinices belongs to Polinicinae'
- 'Polinices (Euspira) victoriana is recombined as Polinices victoriana'
- 'Polinices canalis belongs to Polinices' according to Moore 1963
- 'Polinices canalis is a subjective synonym of Polinices victoriana'
- 'Polinicinae belongs to Naticidae'
- 'Polynices (Neverita) recluziana alta is recombined as Neverita recluziana alta' according to Arnold 1908
- 'Polynices (Neverita) recluziana alta is recombined as Neverita (Glossaulax) alta'
- 'Polystira belongs to Turrinae'
- 'Polystira englishi belongs to Polystira'
- 'Pomaulax was reranked as Astraea (Pomaulax) and belongs to Astraea'
- 'Priscofusus belongs to Fusinidae'
- 'Psephaea belongs to Volutidae'
- 'Ptycheulimella was reranked as Turbonilla (Ptycheulimella) and belongs to Turbonilla'
- 'Purpura edmondi is recombined as Thais (Thaisella) edmondi'
- 'Purpura milicentana is recombined as Ocenebra milicentana'
- 'Pyramidella belongs to Pyramidellidae'
- 'Pyramidella cooperi is recombined as Pyramidella (Longchaeus) cooperi'
- 'Pyramidellidae belongs to Tectibranchia'
- 'Pyrgiscus was reranked as Turbonilla (Pyrgiscus) and belongs to Turbonilla'
- 'Pyrgolampros was reranked as Turbonilla (Pyrgolampros) and belongs to Turbonilla'
- 'Ranella mathewsonii is recombined as Mediargo mathewsoni'
- 'Rictaxis was reranked as Acteon (Rictaxis) and belongs to Acteon'
- 'Rugatiscala was reranked as Opalia (Rugatiscala) and belongs to Opalia'
- 'Scalina belongs to Epitoniidae'
- 'Scaphander belongs to Scaphandridae'
- 'Scaphandridae belongs to Tectibranchia'
- 'Sigaretus scopulosus is recombined as Sinum scopulosum'
- 'Sininae belongs to Naticidae'
- 'Sinum belongs to Sininae'
- 'Sinum californicum belongs to Sinum' according to Oldroyd 1917
- 'Sinum californicum is a subjective synonym of Sinum scopulosum'
- 'Sinum planicostum is a subjective synonym of Sinum scopulosum'
- 'Siphonalia posoensis is recombined as Kelletia posoensis'
- 'Strioterebrum was reranked as Terebra (Strioterebrum) and belongs to Terebra'
- 'Strombina belongs to Columbellidae'
- 'Sulcoretusa belongs to Acteocinidae'
- 'Sulcoretusa israelskyi belongs to Sulcoretusa'
- 'Syrnola was reranked as Pyramidella (Syrnola) and belongs to Pyramidella'
- 'Syrnola scandix is a subjective synonym of Pyramidella (Syrnola) ochsneri'
- 'Talityphis was reranked as Typhis (Talityphis) and belongs to Typhis'
- 'Tectibranchiata was reranked as the order Tectibranchia and belongs to Gastropoda'
- 'Tegula belongs to Trochidae'
- 'Tegula (Omphalius) laevis belongs to Tegula (Omphalius)'
- 'Teinostoma (Teinostoma) belongs to Teinostoma' according to H. Adams and A. Adams 1853
- 'Teinostoma (Teinostoma) lens is recombined as Vitrinella (Vitrinellops) lens'
- 'Terebra belongs to Terebridae'
- 'Terebra (Fusoterebra) adelaidana belongs to Terebra (Fusoterebra)'
- 'Terebra (Strioterebrum) stirtoni belongs to Terebra (Strioterebrum)'
- 'Terebra (Terebra) belongs to Terebra'
- 'Terebra cooperi is recombined as Terebra (Terebra) cooperi'
- 'Terebridae belongs to Neogastropoda'
- 'Thais belongs to Thaisidae'
- 'Thais (Stramonita) carrizoensis is a subjective synonym of Thais (Nucella) packi'
- 'Thais blakei is recombined as Thais (Thaisella) blakei'
- 'Thais packi is recombined as Thais (Nucella) packi'
- 'Thais trophonoides is recombined as Ocenebra trophonoides'
- 'Thaisella was reranked as Thais (Thaisella) and belongs to Thais'
- 'Thaisidae belongs to Neogastropoda'
- 'Torcula was reranked as Turritella (Torcula) and belongs to Turritella'
- 'Tragula was reranked as Turbonilla (Tragula) and belongs to Turbonilla'
- 'Trichotropidae [misspelled as Trichotropididae] belongs to Mesogastropoda'
- 'Trichotropis belongs to Trichotropididae'
- 'Trichotropis tricarinata belongs to Trichotropis'
- 'Triumphis belongs to Buccinidae'
- 'Trochidae belongs to Archaeogastropoda'
- 'Trochita was reranked as Calyptraea (Trochita) and belongs to Calyptraea'
- 'Trochita filosa is recombined as Calyptraea filosa'
- 'Trophon belongs to Muricidae'
- 'Trophon gabbiana is recombined as Ocenebra gabbiana'
- 'Trophon kernensis is recombined as Trophon (Austrotrophon) kernensis'
- 'Trophon oregonensis is a subjective synonym of Trophon (Austrotrophon) kernensis'
- 'Trophosycon was reranked as Ficus (Trophosycon) and belongs to Ficus'
- 'Tumulus was reranked as Gibbula (Tumulus) and belongs to Gibbula'
- 'Turbinidae belongs to Archaeogastropoda'
- 'Turbonilla belongs to Pyramidellidae'
- 'Turbonilla (Chemnitzia) hannai belongs to Turbonilla (Chemnitzia)'
- 'Turbonilla (Ptycheulimella) edisonensis belongs to Turbonilla (Ptycheulimella)'
- 'Turbonilla (Pyrgiscus) bravoensis belongs to Turbonilla (Pyrgiscus)'
- 'Turbonilla (Pyrgiscus) hormigacuesta belongs to Turbonilla (Pyrgiscus)'
- 'Turbonilla (Tragula) greenhornensis belongs to Turbonilla (Tragula)'
- 'Turricula belongs to Turriculinae'
- 'Turricula libya belongs to Turricula' according to Dall 1919
- 'Turricula libya is a subjective synonym of Turricula ochsneri'
- 'Turriculinae belongs to Turridae'
- 'Turridae belongs to Neogastropoda'
- 'Turrinae belongs to Turridae'
- 'Turris wynoocheensis is recombined as Megasurcula wynoocheensis'
- 'Turritella belongs to Turritellidae'
- 'Turritella bosei is a subjective synonym of Turritella ocoyana'
- 'Turritella kernensis belongs to Turritella'
- 'Turritella moodyi belongs to Turritella' according to Applin 1920
- 'Turritella moodyi belongs to Turritella'
- 'Turritella ocoyana belongs to Turritella'
- 'Turritella ocoyana topangensis belongs to Turritella ocoyana' according to Merriam 1941
- 'Turritella ocoyana topangensis belongs to Turritella ocoyana'
- 'Turritella wittichi is a subjective synonym of Turritella ocoyana'
- 'Turritellidae belongs to Mesogastropoda'
- 'Typhis belongs to Muricidae'
- 'Typhis (Talityphis) lampada belongs to Typhis (Talityphis)'
- 'Vitrinella belongs to Vitrinellidae'
- 'Vitrinellidae belongs to Mesogastropoda'
- 'Vitrinellops was reranked as Vitrinella (Vitrinellops) and belongs to Vitrinella'
- 'Volutidae belongs to Neogastropoda'
- 'Volvulella belongs to Acteocinidae'
- 'Volvulella gluma belongs to Volvulella'
- 'Volvulella joaquinensis belongs to Volvulella'
- 'Xenuroturris belongs to Turrinae'