Opinions from B. L. Clark and A. O. Woodford 1927
- 'Arca hornii elusa belongs to Arca hornii'
- 'Brachysphingus mammilatus belongs to Brachysphingus'
- 'Bulbifusus californicus belongs to Bulbifusus'
- 'Calyptraea calabasasensis belongs to Calyptraea' according to Nelson 1925
- 'Calyptraea calabasasensis is recombined as Calyptraea (Galerus) calabasasensis'
- 'Cancellaria stantoni is recombined as Admete (Bonellitia) stantoni'
- 'Cardium hartleyensis belongs to Cardium'
- 'Cardium marysvillensis belongs to Cardium' according to Dickerson 1916
- 'Cardium marysvillensis is recombined as Cardium (Protocardium) marysvillensis'
- 'Corbula diaboli belongs to Corbula'
- 'Corbula dilatata belongs to Corbula' according to Waring 1917
- 'Crassatellites meganosensis belongs to Crassatellites'
- 'Cylichna costata is recombined as Scaphander costatus'
- 'Dentalium cooperii is corrected as Dentalium cooperi and belongs to Dentalium'
- 'Dentalium stramineum belongs to Dentalium'
- 'Dosiniopsis stewartvillensis belongs to Dosiniopsis'
- 'Drillia cooperi belongs to Drillia' according to Dickerson 1916
- 'Drillia cooperi is recombined as Turricula cooperi'
- 'Drillia hartleyensis belongs to Drillia'
- 'Ficopsis meganosensis belongs to Ficopsis'
- 'Fusinus meganosensis belongs to Fusinus'
- 'Galeodea sutterensis belongs to Galeodea' according to Dickerson 1916
- 'Galeodea sutterensis belongs to Galeodea'
- 'Galerus was reranked as Calyptraea (Galerus) and belongs to Calyptraea'
- 'Gemmula diabloensis belongs to Gemmula'
- 'Gemmula wattsi belongs to Gemmula' according to Anderson and Hanna 1925
- 'Gemmula wattsi belongs to Gemmula'
- 'Glycymeris major meganosensis belongs to Glycymeris major'
- 'Haminea postangulata belongs to Haminea'
- 'Lucina cretacea is recombined as Diplodonta cretacea' according to Gabb 1864
- 'Lunatia hornii is recombined as Polinices (Euspira) hornii'
- 'Lunatia nuciformis is recombined as Polinices (Euspira) nuciformis'
- 'Lyonsia venturaensis belongs to Lyonsia'
- 'Macrocallista meganosensis belongs to Macrocallista'
- 'Martesia meganosensis belongs to Martesia'
- 'Modiola ornata is recombined as Modiolus (Brachydontes) ornatus'
- 'Modiolus meganosensis belongs to Modiolus'
- 'Molopophorus californicus belongs to Molopophorus'
- 'Natica gesteri is recombined as Polinices (Euspira) gesteri'
- 'Neverita globosa belongs to Neverita'
- 'Nucula gabbiana belongs to Nucula' according to Dickerson 1916
- 'Odostomia diaboli belongs to Odostomia'
- 'Oliva meganosensis belongs to Oliva'
- 'Parvisipho meganosensis belongs to Parvisipho'
- 'Pectunculus veatchi major is recombined as Glycymeris major'
- 'Periploma stewartvillensis belongs to Periploma'
- 'Phacoides meganosensis belongs to Phacoides'
- 'Phos martini is recombined as Chrysodomus martini'
- 'Pitaria belongs to Veneridae'
- 'Pitaria conradi belongs to Pitaria' according to Dickerson 1916
- 'Pitaria palmeri belongs to Pitaria'
- 'Pseudoliva dilleri belongs to Pseudoliva' according to Dickerson 1914
- 'Pseudoliva dilleri belongs to Pseudoliva'
- 'Schizaster diabloensis belongs to Schizaster'
- 'Siphonalia sutterensis belongs to Siphonalia'
- 'Solariella hartleyensis belongs to Solariella'
- 'Sphenia meganosensis belongs to Sphenia'
- 'Spisula meganosensis belongs to Spisula'
- 'Strepsidura diabloensis belongs to Strepsidura'
- 'Tellina redmondii belongs to Tellina' according to Gabb 1869
- 'Tivela kelloggensis belongs to Tivela'
- 'Trochocyathus imperialis belongs to Trochocyathus'
- 'Turbonilla marshensis belongs to Turbonilla'
- 'Turritella meganosensis belongs to Turritella'
- 'Turritella merriami belongs to Turritella'
- 'Yoldia mortuasusensis belongs to Yoldia'