Opinions from A. A. Olsson 1931
- 'Acanthina belongs to Thaisidae'
- 'Acharax belongs to Solemyacidae'
- 'Acharax belenensis belongs to Acharax'
- 'Acila belongs to Nuculidae'
- 'Acila paita belongs to Acila'
- 'Acila plura belongs to Acila'
- 'Agaronia antisana belongs to Agaronia'
- 'Agaronia cotapaxi belongs to Agaronia'
- 'Agriopoma belongs to Veneridae'
- 'Agriopoma mancorensis belongs to Agriopoma'
- 'Ampullariidae belongs to Ctenobranchiata'
- 'Ampullina belongs to Ampullariidae'
- 'Ampullina bravoensis belongs to Ampullina'
- 'Ampullinopsis belongs to Ampullariidae'
- 'Anconia belongs to Melaniidae'
- 'Anconia elenensis belongs to Anconia'
- 'Antigona belongs to Veneridae'
- 'Aporrhaidae belongs to Taenioglossa'
- 'Arca belongs to Arcidae'
- 'Arca (Argina) puntabravoensis belongs to Arca (Argina)'
- 'Arcidae belongs to Arcacea'
- 'Argina belongs to Arcidae'
- 'Argina puntabravoensis belongs to Argina'
- 'Artena belongs to Veneridae'
- 'Astartacea belongs to Teleodesmacea'
- 'Borsonia belongs to Turridae'
- 'Borsonia peruviana belongs to Borsonia'
- 'Buccinidae belongs to Rachigdossa'
- 'Callista belongs to Veneridae'
- 'Carditacea belongs to Teleodesmacea'
- 'Carditidae belongs to Carditacea'
- 'Cassididae belongs to Taenioglossa'
- 'Cerithiadae is corrected as Cerithiidae and belongs to Taenioglossa'
- 'Cerithium belongs to Cerithiidae'
- 'Cerithium macarum belongs to Cerithium'
- 'Chione belongs to Veneridae'
- 'Chione posorjensis belongs to Chione'
- 'Chiraluta belongs to Volutidae'
- 'Chiraluta inca belongs to Chiraluta'
- 'Chorus belongs to Thaisidae'
- 'Chorus meroensis belongs to Chorus'
- 'Chorus sula belongs to Chorus'
- 'Clathrodrillia belongs to Turridae'
- 'Clathrodrillia mira belongs to Clathrodrillia'
- 'Codakia belongs to Lucinidae'
- 'Costacallista belongs to Veneridae'
- 'Costacallista canoasensis belongs to Costacallista'
- 'Costacallista mancorensis belongs to Costacallista'
- 'Crassatellites belongs to Crassatellitidae'
- 'Crassatellites neorhynchus belongs to Crassatellites'
- 'Crassatellitidae belongs to Astartacea'
- 'Ctenobranchiata belongs to Gastropoda'
- 'Cymia belongs to Thaisidae'
- 'Cymia berryi belongs to Cymia'
- 'Cypraea belongs to Cypraeidae'
- 'Cypraea (Cypraedia) chira belongs to Cypraea (Cypraedia)'
- 'Cypraedia was reranked as Cypraea (Cypraedia) and belongs to Cypraea'
- 'Cypricardiacea belongs to Teleodesmacea'
- 'Cyrenacea belongs to Teleodesmacea'
- 'Cyrenidae belongs to Cyrenacea'
- 'Cyrtochetus belongs to Buccinidae'
- 'Cyrtochetus chiraensis belongs to Cyrtochetus'
- 'Donacidae belongs to Tellinacea'
- 'Donax belongs to Donacidae'
- 'Donax petersoni belongs to Donax'
- 'Dosinia belongs to Veneridae'
- 'Dosinia (Dosinidia) was reranked as Dosinidia and belongs to Veneridae'
- 'Dosinia (Dosinidia) belongs to Dosinia' according to Dall 1902
- 'Dosinidia palmerae belongs to Dosinidia'
- 'Dreisseniidae belongs to Pectinacea'
- 'Ectinochilus belongs to Aporrhaidae'
- 'Fasciolariidae is corrected as Fasciolaridae and belongs to Rachiglossa'
- 'Faunus belongs to Melanopsinae'
- 'Ficidae belongs to Taenioglossa'
- 'Ficus belongs to Taenioglossa'
- 'Ficus chiraensis belongs to Ficus'
- 'Ficus woodringi belongs to Ficus'
- 'Hannatoma belongs to Melaniidae'
- 'Hannatoma emendorferi belongs to Hannatoma'
- 'Hannatoma tumbezia belongs to Hannatoma'
- 'Harpa belongs to Harpidae'
- 'Harpa myrmia belongs to Harpa'
- 'Harpidae belongs to Rachigdossa'
- 'Hemisinus belongs to Melaniidae'
- 'Hemisinus terebriformis belongs to Hemisinus'
- 'Herculea belongs to Cassididae'
- 'Herculea charanalense belongs to Herculea'
- 'Isocardiacea belongs to Teleodesmacea'
- 'Jagonia belongs to Lucinidae'
- 'Jagonia peruviana belongs to Jagonia'
- 'Knefastia belongs to Turridae'
- 'Knefastia chira belongs to Knefastia'
- 'Lamelliconcha belongs to Veneridae'
- 'Lamelliconcha ayabaca belongs to Lamelliconcha'
- 'Lamelliconcha charanica belongs to Lamelliconcha'
- 'Lamelliconcha wolfi belongs to Lamelliconcha'
- 'Lamprodoma belongs to Olividae'
- 'Lamprodoma illesca belongs to Lamprodoma'
- 'Latirus belongs to Fasciolaridae'
- 'Latrius quercotillaensis belongs to Latrius'
- 'Leda belongs to Ledidae'
- 'Leda stewardi belongs to Leda'
- 'Ledidae belongs to Nuculacea'
- 'Lucina belongs to Lucinidae'
- 'Lucina inca belongs to Lucina'
- 'Lucina lomitensis belongs to Lucina'
- 'Lucinidae belongs to Lucinacea'
- 'Lucinoma belongs to Lucinidae'
- 'Lucinoma zapotalensis belongs to Lucinoma'
- 'Lunatia belongs to Naticidae'
- 'Lunatia chulucana belongs to Lunatia'
- 'Lyria belongs to Volutidae'
- 'Lyria peruviana belongs to Lyria'
- 'Macoma belongs to Tellinidae'
- 'Macoma lissoni belongs to Macoma'
- 'Macoma meroensis belongs to Macoma'
- 'Mactra belongs to Mactridae'
- 'Mactra tumbezia belongs to Mactra'
- 'Mactracea belongs to Teleodesmacea'
- 'Mactrella belongs to Mactridae'
- 'Mactridae belongs to Mactracea'
- 'Mancorus belongs to Fasciolaridae'
- 'Melanatria gesteri is recombined as Hannatoma gesteri'
- 'Melaniidae belongs to Taenioglossa'
- 'Melanopsinae was reranked as the family Melanopsidae and belongs to Taenioglossa'
- 'Melongena belongs to Buccinidae'
- 'Melongena charanalensis belongs to Melongena'
- 'Metula belongs to Buccinidae'
- 'Metula peruviana belongs to Metula'
- 'Morum belongs to Cassididae'
- 'Muricidae belongs to Rachiglossa'
- 'Myrtaea cookei belongs to Myrtaea'
- 'Myrtea [misspelled as Myrtaea] belongs to Lucinidae'
- 'Mytilidae belongs to Pectinacea'
- 'Mytilopsis belongs to Dreissenidae'
- 'Mytilopsis trigalensis belongs to Mytilopsis'
- 'Mytilus belongs to Mytilidae'
- 'Mytilus canoasensis belongs to Mytilus'
- 'Naticidae belongs to Taenioglossa'
- 'Neverita belongs to Naticidae'
- 'Neverita subreclusiana belongs to Neverita'
- 'Nucula belongs to Nuculidae'
- 'Nucula mancorensis belongs to Nucula'
- 'Nucula paboensis belongs to Nucula'
- 'Nuculidae belongs to Nuculacea'
- 'Oliva belongs to Olividae'
- 'Oliva pichincha belongs to Oliva'
- 'Olivancillaria belongs to Olividae'
- 'Olivancillaria (Agaronia) was reranked as Agaronia and belongs to Olividae'
- 'Olivancillaria aequatorialis belongs to Olivancillaria'
- 'Olivella belongs to Olividae'
- 'Olividae belongs to Rachiglossa'
- 'Oniscidea belongs to Cassididae'
- 'Oniscidea chiraense belongs to Oniscidea'
- 'Oniscidea dolioides belongs to Oniscidea'
- 'Oniscidea peruvianum belongs to Oniscidea'
- 'Ostrea belongs to Ostreidae'
- 'Ostrea miradorensis belongs to Ostrea'
- 'Ostreidae belongs to Ostreacea'
- 'Oxyperas belongs to Mactridae'
- 'Oxyperas steinmanni belongs to Oxyperas'
- 'Pachychilus belongs to Melaniidae'
- 'Pachychilus canoasensis belongs to Pachychilus'
- 'Paradonax belongs to Donacidae'
- 'Paradonax petersoni belongs to Paradonax'
- 'Peruchilus belongs to Aporrhaidae'
- 'Peruchilus culberti belongs to Peruchilus'
- 'Peruficus belongs to Fasciolaridae'
- 'Phacoides belongs to Lucinidae'
- 'Pitarella belongs to Veneridae'
- 'Pitaria belongs to Veneridae'
- 'Pleurophopsis belongs to Pleurophoridae'
- 'Pleurophopsis lithophagoides belongs to Pleurophopsis'
- 'Pleurophopsis peruviana belongs to Pleurophopsis'
- 'Pleurophoridae belongs to Cypricardiacea'
- 'Polinices belongs to Naticidae'
- 'Pollia belongs to Buccinidae'
- 'Pollia huitra belongs to Pollia'
- 'Polymesoda belongs to Cyrenidae'
- 'Polymesoda bravoensis belongs to Polymesoda'
- 'Polymesoda trigalensis belongs to Polymesoda'
- 'Potamides belongs to Cerithiadae'
- 'Potamides chira belongs to Potamides'
- 'Potamides hondensis belongs to Potamides'
- 'Prionodesmacea belongs to Pelecypoda'
- 'Psammobiidae belongs to Tellinacea'
- 'Pseudofaunus belongs to Melanopsinae'
- 'Pseudofaunus bravoensis belongs to Pseudofaunus'
- 'Pseudofaunus chiraensis belongs to Pseudofaunus'
- 'Rachigdossa belongs to Ctenobranchiata'
- 'Rimella belongs to Strombidae'
- 'Rimella peruviana belongs to Rimella'
- 'Saccella charanica belongs to Saccella'
- 'Saccella miradorana belongs to Saccella'
- 'Sanguinolaria belongs to Psammobiidae'
- 'Sanguinolaria tumbezana belongs to Sanguinolaria'
- 'Scapharca meroensis belongs to Scapharca'
- 'Scobinella belongs to Turridae'
- 'Scobinella meloda belongs to Scobinella'
- 'Sinum belongs to Naticidae'
- 'Siphonalia belongs to Buccinidae'
- 'Siphonalia belenensis belongs to Siphonalia'
- 'Siphonalia tessaria belongs to Siphonalia'
- 'Solemya belongs to Solemyacidae'
- 'Solemya lomitensis belongs to Solemya'
- 'Solemyacidae belongs to Prionodesmacea'
- 'Spisula belongs to Mactridae'
- 'Spondylidae belongs to Pectinacea'
- 'Spondylus belongs to Spondylidae'
- 'Spondylus mimus belongs to Spondylus'
- 'Strigatella belongs to Volutidae'
- 'Strigatella peruviana belongs to Strigatella'
- 'Strombidae belongs to Taenioglossa'
- 'Strombus belongs to Strombidae'
- 'Strombus chiraensis belongs to Strombus'
- 'Surcula belongs to Turridae'
- 'Surcula piura belongs to Surcula'
- 'Surcula sullana belongs to Surcula'
- 'Taenioglossa belongs to Ctenobranchiata'
- 'Teleodesmacea belongs to Pelecypoda'
- 'Tellinacea belongs to Teleodesmacea'
- 'Tellinidae belongs to Tellinacea'
- 'Thaisidae belongs to Rachigdossa'
- 'Thyasira belongs to Thyasiridae'
- 'Thyasira montanita belongs to Thyasira'
- 'Thyasira peruviana belongs to Thyasira'
- 'Thyasira staufti belongs to Thyasira'
- 'Thyasira tessaria belongs to Thyasira'
- 'Thyasiridae belongs to Lucinacea'
- 'Tritiaria belongs to Buccinidae'
- 'Tritiaria chira belongs to Tritiaria'
- 'Turricula belongs to Turridae'
- 'Turridae belongs to Rachigdossa'
- 'Turritella belongs to Turritellidae'
- 'Turritella caleta belongs to Turritella'
- 'Turritella conquistadorana belongs to Turritella'
- 'Turritella galvesia belongs to Turritella'
- 'Turritella gilbertharrisi belongs to Turritella' according to Hodson 1926
- 'Turritella gilbertharrisi belongs to Turritella'
- 'Turritella hubbardi belongs to Turritella' according to Hodson 1926
- 'Turritella hubbardi belongs to Turritella'
- 'Turritella salchia belongs to Turritella'
- 'Turritella samanensis belongs to Turritella' according to Olsson 1928
- 'Turritella samanensis belongs to Turritella'
- 'Turritellidae belongs to Taenioglossa'
- 'Venericardia belongs to Carditidae'
- 'Venericardia charanalensis belongs to Venericardia'
- 'Veneridae belongs to Veneracea'
- 'Vesicomya belongs to Vesicomyacidae'
- 'Vesicomya ramondi belongs to Vesicomya'
- 'Vesicomya tschudi belongs to Vesicomya'
- 'Vesicomyacidae belongs to Isocardiacea'
- 'Volutidae belongs to Rachigdossa'
- 'Yasila belongs to Muricidae'
- 'Yasila chiraensis belongs to Yasila'