Opinions from W. M. Gabb 1869
- 'Acila was reranked as Nucula (Acila) and belongs to Nucula'
- 'Acmaea tejonensis belongs to Acmaea'
- 'Actaeonella oviformis belongs to Actaeonella'
- 'Acteonina pupoides is recombined as Actaeonina pupoides'
- 'Ammonites batesii belongs to Ammonites'
- 'Ammonites brewerii belongs to Ammonites'
- 'Ammonites complexus suciaensis belongs to Ammonites complexus' according to Meek 1861
- 'Ammonites complexus suciaensis is recombined as Ammonites suciaensis'
- 'Ammonites fraternus belongs to Ammonites'
- 'Ammonites hoffmannii belongs to Ammonites'
- 'Ammonites jugalis belongs to Ammonites'
- 'Ammonites stoliczkanus belongs to Ammonites'
- 'Ammonites tehamaensis belongs to Ammonites'
- 'Ammonites traskii belongs to Ammonites'
- 'Ammonites whitneyi belongs to Ammonites'
- 'Ampullina striata belongs to Ampullina'
- 'Anatina quadrata belongs to Anatina'
- 'Anchura carinifera belongs to Anchura'
- 'Anchura transversa belongs to Anchura'
- 'Ancyloceras lineatus belongs to Ancyloceras'
- 'Anomia vancouverensis belongs to Anomia'
- 'Aporrhais falciformis is recombined as Anchura falciformis'
- 'Arcomya undulata belongs to Arcomya'
- 'Asaphis multicostata belongs to Asaphis'
- 'Ataphrus crassus belongs to Ataphrus'
- 'Atresius liratus belongs to Atresius'
- 'Axinaea (Limopsis) sagittata belongs to Axinaea (Limopsis)'
- 'Baculites occidentalis belongs to Baculites'
- 'Bela clathrata belongs to Bela'
- 'Belemnites impressus belongs to Belemnites'
- 'Brachysphingus sinuatus belongs to Brachysphingus'
- 'Buccinum liratum is recombined as Brachysphingus liratus'
- 'Bullia (Molopophorus) striata belongs to Bullia (Molopophorus)'
- 'Busycon blakei is recombined as Perissolax blakei'
- 'Callianassa stimpsoni is corrected as Callianassa stimpsonii and belongs to Callianassa'
- 'Calliostoma radiatum belongs to Calliostoma'
- 'Cardita hornii belongs to Cardita'
- 'Cardium (Laevicardium) annulatum belongs to Cardium (Laevicardium)'
- 'Cardium (Protocardium) translucidum belongs to Cardium (Protocardium)'
- 'Chemnitzia planulata belongs to Chemnitzia'
- 'Cinulia pinguis is recombined as Ringinella pinguis'
- 'Conus sinuatus is recombined as Surcula (Surculites) sinuata'
- 'Corbula alaeformis belongs to Corbula'
- 'Corbula hornii belongs to Corbula'
- 'Cordiera mitraeformis belongs to Cordiera'
- 'Crassatella compacta belongs to Crassatella'
- 'Crassatellites grandis is recombined as Crassatella grandis'
- 'Crioceras (Ancyloceras) remondi is recombined as Ancyloceras remondi'
- 'Crioceras percostatus is recombined as Ancyloceras percostatus'
- 'Cypraea (Epona) mathewsonii belongs to Cypraea (Epona)'
- 'Cypraea bayerquei is recombined as Cypraea (Luponia) bayerquei'
- 'Diptychoceras laevis belongs to Diptychoceras'
- 'Donax latus belongs to Donax'
- 'Epona was reranked as Cypraea (Epona) and belongs to Cypraea'
- 'Ficus cypraeoides is recombined as Sycodes cypraeoides'
- 'Fusus (Hemifusus) cooperii is recombined as Ficopsis cooperii'
- 'Fusus (Hemifusus) hornii is recombined as Ficopsis hornii'
- 'Fusus (Hemifusus) remondii is recombined as Ficopsis remondii'
- 'Fusus occidentalis belongs to Fusus'
- 'Fusus tumidus belongs to Fusus'
- 'Gymnarus was reranked as Pugnellus (Gymnarus) and belongs to Pugnellus'
- 'Helicaulax bicarinata belongs to Helicaulax'
- 'Helicaulax costata belongs to Helicaulax'
- 'Heteroterma trochoidea belongs to Heteroterma'
- 'Hypogella was reranked as Solen (Hypogella) and belongs to Solen'
- 'Inoceramus elliottii belongs to Inoceramus'
- 'Inoceramus piochii is recombined as Aucella piochii'
- 'Inoceramus whitneyi belongs to Inoceramus'
- 'Laevicardium was reranked as Cardium (Laevicardium) and belongs to Cardium'
- 'Lima multiradiata belongs to Lima'
- 'Lima shastaensis belongs to Lima'
- 'Liocium punctatum belongs to Liocium'
- 'Loripes dubia is recombined as Clisocolus dubia'
- 'Loxotrema turrita belongs to Loxotrema'
- 'Luponia was reranked as Cypraea (Luponia) and belongs to Cypraea'
- 'Mactra ashburnerii is recombined as Cymbophora ashburnerii'
- 'Mactra tenuissima belongs to Mactra'
- 'Margaritella angulata belongs to Margaritella'
- 'Martesia clausa belongs to Martesia'
- 'Meleagrina antiqua belongs to Meleagrina'
- 'Meretrix fragilis belongs to Meretrix'
- 'Meretrix hornii belongs to Meretrix'
- 'Meretrix nitida is recombined as Caryatis nitida'
- 'Mitra cretacea belongs to Mitra'
- 'Modiola major belongs to Modiola'
- 'Mytilus quadratus belongs to Mytilus'
- 'Natica alveata is recombined as Euspira alveata'
- 'Neithea grandicosta belongs to Neithea'
- 'Neptunea (Tritonofusus) cretacea belongs to Neptunea (Tritonofusus)'
- 'Neptunea hoffmannii is recombined as Eripachya hoffmannii'
- 'Neptunea mucronata belongs to Neptunea'
- 'Neptunea perforata is recombined as Eripachya perforata'
- 'Neptunea ponderosa is recombined as Eripachya ponderosa'
- 'Nerita (Theliostyla) belongs to Nerita'
- 'Nerita (Theliostyla) triangulata belongs to Nerita (Theliostyla)'
- 'Neverita globosa belongs to Neverita'
- 'Nucula solitaria belongs to Nucula'
- 'Nucula truncata is recombined as Nucula (Acila) truncata'
- 'Ostrea appressa belongs to Ostrea'
- 'Ostrea idriaensis belongs to Ostrea'
- 'Palaeatractus crassus belongs to Palaeatractus'
- 'Panopaea concentrica is recombined as Homomya concentrica'
- 'Pecten complexicosta belongs to Pecten'
- 'Pecten interradiatus belongs to Pecten'
- 'Pecten martinezensis belongs to Pecten'
- 'Pecten traskii belongs to Pecten'
- 'Pholadomya oregonensis belongs to Pholadomya'
- 'Pinna brewerii belongs to Pinna'
- 'Pleuromya papyracea belongs to Pleuromya'
- 'Protocardium was reranked as Cardium (Protocardium) and belongs to Cardium'
- 'Ptiloteuthis foliatus belongs to Ptiloteuthis'
- 'Ptychoceras aequicostatus is recombined as Helicancylus aequicostatus'
- 'Pugnellus hamulus belongs to Pugnellus'
- 'Pugnellus manubriatus is recombined as Pugnellus (Gymnarus) manubriatus'
- 'Ringinella polita belongs to Ringinella'
- 'Rostellaria bicarinata is recombined as Helicaulax bicarinata'
- 'Smilotrochus curtus belongs to Smilotrochus'
- 'Solen (Hypogella) cuneatus belongs to Solen (Hypogella)'
- 'Solen (Solena) diegoensis is recombined as Solen (Hypogella) diegoensis'
- 'Surcula (Surculites) inconspicua belongs to Surcula (Surculites)'
- 'Surcula praeattenuata belongs to Surcula'
- 'Surculites was reranked as Surcula (Surculites) and belongs to Surcula'
- 'Tellina aequalis belongs to Tellina'
- 'Tellina hoffmanniana belongs to Tellina'
- 'Tellina remondii belongs to Tellina'
- 'Tellina undulifera belongs to Tellina'
- 'Terebra californica belongs to Terebra'
- 'Terebratella whitneyi is recombined as Rhynchonella whitneyi'
- 'Thetis elongata belongs to Thetis'
- 'Trachytriton was reranked as Tritonium (Trachytriton) and belongs to Tritonium'
- 'Trigonia aequicostata belongs to Trigonia'
- 'Tritonium (Trachytriton) fusiformis belongs to Tritonium (Trachytriton)'
- 'Tritonium (Trachytriton) tejonensis belongs to Tritonium (Trachytriton)'
- 'Tritonium californicum belongs to Tritonium'
- 'Tritonofusus was reranked as Neptunea (Tritonofusus) and belongs to Neptunea'
- 'Turbinella crassitesta belongs to Turbinella'
- 'Turrilites oregonensis belongs to Turrilites'
- 'Turritella martinezensis belongs to Turritella'
- 'Unio hubbardii belongs to Unio'
- 'Urosyca caudata belongs to Urosyca'
- 'Venus aequilateralis belongs to Venus'