Opinions from F. M. Anderson 1902
- 'Acanthoceras compressum belongs to Acanthoceras'
- 'Ammonites batesii is recombined as Lytoceras batesi'
- 'Ammonites blanfordianus belongs to Ammonites' according to Stoliczka 1863
- 'Ammonites blanfordianus is recombined as Schloenbachia blanfordianus'
- 'Ammonites cala is recombined as Lytoceras (Tetragonites) cala'
- 'Ammonites chicoensis is recombined as Schloenbachia chicoensis'
- 'Ammonites dispar is recombined as Stoliczkia dispar'
- 'Ammonites duvalianus is recombined as Lytoceras duvalianum'
- 'Ammonites jugalis is recombined as Desmoceras jugalis'
- 'Ammonites kayei is recombined as Lytoceras (Gaudryceras) kayei'
- 'Ammonites mammillatus is recombined as Douvilliceras mamillare'
- 'Ammonites newberryanus is recombined as Pachydiscus newberryanus'
- 'Ammonites propinquus is recombined as Schloenbachia propinquus'
- 'Ammonites sacya is recombined as Lytoceras (Gaudryceras) sacya'
- 'Ammonites sugata is recombined as Desmoceras sugatum'
- 'Ammonites whitneyi is a subjective synonym of Lytoceras (Gaudryceras) sacya'
- 'Anchura condoniana belongs to Anchura'
- 'Baculites fairbanksi belongs to Baculites'
- 'Cucullaea bowersiana belongs to Cucullaea'
- 'Desmoceras colusaense belongs to Desmoceras'
- 'Desmoceras dilleri belongs to Desmoceras'
- 'Desmoceras hoffmanni belongs to Desmoceras' according to Gabb 1864
- 'Desmoceras hoffmanni belongs to Desmoceras'
- 'Desmoceras lecontei belongs to Desmoceras'
- 'Desmoceras subquadratum belongs to Desmoceras'
- 'Desmoceras voyi belongs to Desmoceras'
- 'Douvilleiceras [misspelled as Douvilliceras] belongs to Ammonoidea'
- 'Erato veraghoorensis belongs to Erato'
- 'Gabbioceras was reranked as Lytoceras (Gabbioceras) and belongs to Lytoceras'
- 'Gyrodes siskiyouensis belongs to Gyrodes'
- 'Haliotis lomaensis belongs to Haliotis'
- 'Hamites (Ptychoceras) solanoense belongs to Hamites (Ptychoceras)'
- 'Hamites armatus belongs to Hamites'
- 'Hamites cylindraceus belongs to Hamites' according to de France 1851
- 'Hamites cylindraceus belongs to Hamites'
- 'Hamites ellipticus belongs to Hamites'
- 'Hamites phoenixensis belongs to Hamites'
- 'Helicoceras indicum belongs to Helicoceras'
- 'Heteroceras ceratopse belongs to Heteroceras'
- 'Hoplites parva belongs to Hoplites'
- 'Inoceramus adunca belongs to Inoceramus'
- 'Inoceramus klamathensis belongs to Inoceramus'
- 'Lindigia nodosum belongs to Lindigia'
- 'Lytoceras (Gabbioceras) angulatum belongs to Lytoceras (Gabbioceras)'
- 'Lytoceras (Tetragonites) jacksonense belongs to Lytoceras (Tetragonites)'
- 'Mactra gabbiana belongs to Mactra'
- 'Mortoniceras crenulatum belongs to Mortoniceras'
- 'Nautilus (Cymatoceras) carlottensis is recombined as Nautilus charlottensis'
- 'Nautilus gabbi belongs to Nautilus'
- 'Pachydiscus henleyensis belongs to Pachydiscus'
- 'Pachydiscus merriami belongs to Pachydiscus'
- 'Pectunculus pacificus belongs to Pectunculus'
- 'Pholadomya anaana belongs to Pholadomya'
- 'Phylloceras shastalense belongs to Phylloceras'
- 'Placenticeras californicum belongs to Placenticeras'
- 'Placenticeras pacificum belongs to Placenticeras'
- 'Prionotropis branneri belongs to Prionotropis'
- 'Ptychoceras was reranked as Hamites (Ptychoceras) and belongs to Hamites'
- 'Ptychoceras aequicostatus is recombined as Hamites (Ptychoceras) aequicostatum'
- 'Rhynchonella densleonis belongs to Rhynchonella'
- 'Rhynchonella whiteana belongs to Rhynchonella'
- 'Scaphites condoni belongs to Scaphites'
- 'Scaphites condoni appressus belongs to Scaphites condoni'
- 'Scaphites gillisi belongs to Scaphites'
- 'Scaphites inermis belongs to Scaphites'
- 'Scaphites klamathensis belongs to Scaphites'
- 'Scaphites roguensis belongs to Scaphites'
- 'Schloenbachia buttensis belongs to Schloenbachia'
- 'Schloenbachia gabbi belongs to Schloenbachia'
- 'Schloenbachia knighteni belongs to Schloenbachia'
- 'Schloenbachia multicosta belongs to Schloenbachia'
- 'Schloenbachia siskiyouensis belongs to Schloenbachia'
- 'Schluteria diabloensis belongs to Schluteria'
- 'Sonneratia stantoni belongs to Sonneratia'
- 'Stoliczkaia [misspelled as Stoliczkia] belongs to Ammonoidea'