Opinions from C. R. Givens and M. P. Kennedy 1976
- 'Ampullella belongs to Globulariinae'
- 'Ampullella schencki belongs to Ampullella'
- 'Anomia belongs to Pterioida'
- 'Anomia ephippium belongs to Anomia'
- 'Anomia mcgoniglensis belongs to Anomia'
- 'Anomiidae belongs to Pterioidea'
- 'Arca rostrata is recombined as Nuculana rostrata'
- 'Archaeogastropoda belongs to Gastropoda'
- 'Benoistea belongs to Cerithiinae'
- 'Benoistia umpquaensis belongs to Benoistia'
- 'Bittiinae belongs to Cerithiidae'
- 'Bittium belongs to Bittiinae'
- 'Buccinidae belongs to Neogastropoda'
- 'Cerithiadae is corrected as Cerithiidae and belongs to Mesogastropoda'
- 'Cerithiinae belongs to Cerithiidae'
- 'Cerithiopsis preussi belongs to Cerithiopsis' according to Hanna 1924
- 'Cerithiopsis preussi is recombined as Bittium preussi'
- 'Clavilithes belongs to Fasciolariidae'
- 'Cominellinae belongs to Buccinidae'
- 'Corbula belongs to Corbulidae'
- 'Corbula (Caryocorbula) belongs to Corbula'
- 'Corbula domenginica belongs to Corbula' according to Vokes 1939
- 'Corbula domenginica is recombined as Corbula (Caryocorbula) domenginica'
- 'Corbulidae belongs to Myoidea'
- 'Crommium belongs to Globulariinae'
- 'Crommium andersoni belongs to Crommium'
- 'Fasciolariidae belongs to Neogastropoda'
- 'Gastropoda belongs to Mollusca'
- 'Globulariinae belongs to Naticidae'
- 'Glossaulax was reranked as Neverita (Glossaulax) and belongs to Neverita'
- 'Janiopsis belongs to Pisaniinae'
- 'Janiopsis sanmarcoensis belongs to Janiopsis'
- 'Leda parkei is recombined as Nuculana (Saccella) parkei'
- 'Loxotrema belongs to Thiaridae'
- 'Loxotrema turrita belongs to Loxotrema'
- 'Mesogastropoda belongs to Gastropoda'
- 'Muricidae belongs to Neogastropoda'
- 'Muricopsis belongs to Tritonaliinae'
- 'Muricopsis vistaensis belongs to Muricopsis'
- 'Natica josephinia is recombined as Neverita josephinia'
- 'Naticidae belongs to Mesogastropoda'
- 'Neogastropoda belongs to Gastropoda'
- 'Neptuneidae belongs to Neogastropoda'
- 'Nerita belongs to Neritidae'
- 'Nerita (Theliostyla) belongs to Nerita'
- 'Nerita (Theliostyla) triangulata belongs to Nerita (Theliostyla)'
- 'Nerita peloronta belongs to Nerita'
- 'Neritidae belongs to Archaeogastropoda'
- 'Neverita belongs to Polinicinae'
- 'Neverita globosa is recombined as Neverita (Glossaulax) globosa'
- 'Nuculana belongs to Nuculanidae'
- 'Nuculanidae belongs to Nuculoida'
- 'Nuculoida belongs to Pelecypoda'
- 'Pisaniinae belongs to Buccinidae'
- 'Polinicinae belongs to Naticidae'
- 'Potamides belongs to Potamidinae'
- 'Potamides (Potamides) belongs to Potamides'
- 'Potamides lamarcki is recombined as Potamides (Potamides) lamarcki'
- 'Potamidinae was reranked as the family Potamididae and belongs to Mesogastropoda'
- 'Saccella was reranked as Nuculana (Saccella) and belongs to Nuculana'
- 'Siphonalia belongs to Neptuneidae'
- 'Siphonalia vistaensis belongs to Siphonalia'
- 'Thiaridae belongs to Mesogastropoda'
- 'Tritonaliinae belongs to Muricidae'
- 'Umpquaia belongs to Cominellinae'
- 'Umpquaia oregonensis belongs to Umpquaia'