Opinions from M. J. Rathbun 1926
- 'Achelous xantusii belongs to Achelous' according to Stimpson 1860
- 'Achelous xantusii is recombined as Portunus (Portunus) xantusii'
- 'Albuneidae belongs to Hippidea'
- 'Anomura belongs to Reptantia'
- 'Archaeopus belongs to Ocypodidae'
- 'Archaeopus antennatus belongs to Archaeopus'
- 'Astacidae belongs to Astacura'
- 'Astacura belongs to Reptantia'
- 'Astacus belongs to Astacidae'
- 'Astacus chenoderma belongs to Astacus' according to Cope 1871
- 'Astacus chenoderma belongs to Astacus'
- 'Blepharipoda belongs to Albuneidae'
- 'Blepharipoda brucei belongs to Blepharipoda'
- 'Brachygnatha belongs to Brachyura'
- 'Brachyrhyncha belongs to Brachygnatha'
- 'Brachyuri is corrected as Brachyura and belongs to Decapoda'
- 'Branchiolambrus belongs to Cancridae'
- 'Branchiolambrus altus belongs to Branchiolambrus'
- 'Branchioplax belongs to Pinnotheridae'
- 'Branchioplax washingtoniana belongs to Branchioplax'
- 'Calappa belongs to Calappidae'
- 'Calappa lanensis belongs to Calappa'
- 'Calappidae belongs to Oxystomata'
- 'Callianassa belongs to Callianassidae'
- 'Callianassa atlantica belongs to Callianassa'
- 'Callianassa bandonensis belongs to Callianassa'
- 'Callianassa clallamensis belongs to Callianassa' according to Withers 1924
- 'Callianassa clallamensis belongs to Callianassa'
- 'Callianassa cowlitzensis belongs to Callianassa'
- 'Callianassa fresnoensis belongs to Callianassa'
- 'Callianassa incerta belongs to Callianassa'
- 'Callianassa kewana belongs to Callianassa'
- 'Callianassa knapptonensis belongs to Callianassa'
- 'Callianassa longimana belongs to Callianassa' according to Stimpson 1857
- 'Callianassa longimana belongs to Callianassa'
- 'Callianassa oregonensis belongs to Callianassa'
- 'Callianassa porterensis belongs to Callianassa'
- 'Callianassa stephensi belongs to Callianassa'
- 'Callianassa stimpsoni [misspelled as Callianassa stimpsonii] belongs to Callianassa'
- 'Callianassa twinensis belongs to Callianassa'
- 'Callianassa umpquaensis belongs to Callianassa'
- 'Callianassa whiteavesi is corrected as Callianassa whiteavesii and belongs to Callianassa'
- 'Callianassidae belongs to Thalassinidea'
- 'Callinectes belongs to Portunidae'
- 'Cancer belongs to Cancridae'
- 'Cancer anthonyi belongs to Cancer' according to Rathbun 1897
- 'Cancer anthonyi belongs to Cancer'
- 'Cancer bainbridgensis belongs to Cancer'
- 'Cancer branneri belongs to Cancer'
- 'Cancer brewerii is a subjective synonym of Cancer productus'
- 'Cancer fissus belongs to Cancer'
- 'Cancer gabbi belongs to Cancer'
- 'Cancer gracilis belongs to Cancer' according to Dana 1852
- 'Cancer gracilis belongs to Cancer'
- 'Cancer jordani belongs to Cancer' according to Rathbun 1900
- 'Cancer jordani belongs to Cancer'
- 'Cancer magister belongs to Cancer' according to Dana 1852
- 'Cancer magister belongs to Cancer'
- 'Cancer productus belongs to Cancer'
- 'Cancer urbanus belongs to Cancer'
- 'Cancerides belongs to Brachyrhyncha'
- 'Carcinides belongs to Portunidae'
- 'Carcinides minor belongs to Carcinides'
- 'Chloridella belongs to Chloridellidae'
- 'Chloridella sonomana belongs to Chloridella'
- 'Chloridellidae belongs to Stomatopoda'
- 'Chorilia belongs to Majidae'
- 'Coeloma belongs to Pinnotheridae'
- 'Coeloma martinezensis belongs to Coeloma'
- 'Cryptopodia occidentalis belongs to Cryptopodia' according to Stimpson 1871
- 'Cryptopodia occidentalis is recombined as Heterocrypta occidentalis'
- 'Cycloxanthops belongs to Xanthidae'
- 'Dardanus belongs to Paguridae'
- 'Dardanus arnoldi belongs to Dardanus'
- 'Dromiacea belongs to Brachyura'
- 'Dromiidae belongs to Dromiidea'
- 'Dromioidea [misspelled as Dromiidea] belongs to Dromiacea'
- 'Enoploclytia belongs to Erymaidae'
- 'Enoploclytia minor belongs to Enoploclytia'
- 'Epialtus productus belongs to Epialtus' according to Randall 1839
- 'Epialtus productus is recombined as Pugettia producta'
- 'Eryma belongs to Erymaidae'
- 'Eryma dawsoni belongs to Eryma'
- 'Erymidae [misspelled as Erymaidae] belongs to Astacura'
- 'Eucrate belongs to Pinnotheridae'
- 'Eucrate martini belongs to Eucrate'
- 'Eumorphocorystes belongs to Raninidae'
- 'Eumorphocorystes naselensis belongs to Eumorphocorystes'
- 'Eupagurus granosimanus is recombined as Pagurus granosimanus'
- 'Glyphea belongs to Glypheidae'
- 'Glypheidae belongs to Palinura'
- 'Glypheidea belongs to Palinura'
- 'Goneplacidae belongs to Brachyrhyncha'
- 'Grapsidae belongs to Brachyrhyncha'
- 'Graptocarcinus belongs to Dromiidae'
- 'Gymnopleura belongs to Brachyura'
- 'Hemigrapsus belongs to Grapsidae'
- 'Hepatus belongs to Calappidae'
- 'Hepatus lineatus belongs to Hepatus'
- 'Heterocrypta belongs to Parthenopidae'
- 'Hippidea was reranked as a superfamily and belongs to Anomura'
- 'Homolidae belongs to Homolidea'
- 'Homoloidea [misspelled as Homolidea] belongs to Dromiacea'
- 'Homolopsis belongs to Homolidae'
- 'Homolopsis richardsoni belongs to Homolopsis'
- 'Hoploparia belongs to Astacidae'
- 'Hoploparia canadensis is recombined as Podocratus canadensis'
- 'Ilia ornata belongs to Ilia' according to Randall 1839
- 'Ilia ornata is recombined as Randallia ornata'
- 'Inachus tuberculatus belongs to Inachus' according to Lockington 1877
- 'Inachus tuberculatus is recombined as Pyromaia tuberculata'
- 'Leucosiidae belongs to Oxystomata'
- 'Libinia belongs to Majidae'
- 'Libinia setosa belongs to Libinia'
- 'Lophopanopeus belongs to Xanthidae'
- 'Lophopanopeus diegensis belongs to Lophopanopeus'
- 'Lophopanopeus lockingtoni belongs to Lophopanopeus' according to Rathbun 1900
- 'Lophopanopeus lockingtoni belongs to Lophopanopeus'
- 'Lophopanopeus olearis belongs to Lophopanopeus'
- 'Loxorhynchus crispatus belongs to Loxorhynchus'
- 'Loxorhynchus grandis belongs to Loxorhynchus'
- 'Loxorynchus [misspelled as Loxorhynchus] belongs to Majidae'
- 'Lupa bellicosa is recombined as Callinectes bellicosa'
- 'Macrocheira teglandi belongs to Macrocheira'
- 'Majidae belongs to Oxyrhyncha'
- 'Mesorhoea belongs to Parthenopidae'
- 'Meyeria belongs to Astacidae'
- 'Meyeria harveyi belongs to Meyeria'
- 'Mursia belongs to Calappidae'
- 'Mursia marcusana belongs to Mursia'
- 'Mursia yaquinensis belongs to Mursia'
- 'Necrocarcinus belongs to Calappidae'
- 'Necrocarcinus hannae belongs to Necrocarcinus'
- 'Ocypodidae belongs to Brachyrhyncha'
- 'Othonia is a subjective synonym of Pitho'
- 'Othonia sexdentata belongs to Othonia'
- 'Oxyrhyncha belongs to Brachygnatha'
- 'Oxystomata belongs to Brachyrhyncha'
- 'Paguridea was reranked as a superfamily and belongs to Anomura'
- 'Pagurii is corrected as Paguridae and belongs to Paguridea'
- 'Paguristes belongs to Paguridae'
- 'Pagurus belongs to Paguridae'
- 'Palaeocorystes belongs to Raninidae'
- 'Palaeocorystes harveyi belongs to Palaeocorystes'
- 'Palehomola belongs to Homolidae'
- 'Palehomola gorrelli belongs to Palehomola'
- 'Palinura was reranked as a unranked clade and belongs to Reptantia'
- 'Palinuridae belongs to Scyllaridea'
- 'Parthenopidae belongs to Oxyrhyncha'
- 'Persephona belongs to Leucosiidae'
- 'Pilumnoplax belongs to Pinnotheridae'
- 'Pilumnoplax carmanahensis belongs to Pilumnoplax'
- 'Pilumnoplax hannibalanus belongs to Pilumnoplax'
- 'Pilumnoplax soledadensis belongs to Pilumnoplax'
- 'Pinnixa belongs to Pinnotheridae'
- 'Pinnixa eocenica belongs to Pinnixa'
- 'Pinnotheridae belongs to Brachyrhyncha'
- 'Pitho sexdentata belongs to Pitho'
- 'Plagiolophus belongs to Goneplacidae'
- 'Plagiolophus vancouverensis belongs to Plagiolophus'
- 'Plagiolophus wetherelli belongs to Plagiolophus'
- 'Podocrates vancouverensis belongs to Podocrates' according to Whiteaves 1895
- 'Podocrates vancouverensis is recombined as Podocratus vancouverensis'
- 'Podocratus belongs to Palinuridae'
- 'Portunidae belongs to Brachyrhyncha'
- 'Portunites belongs to Portunidae'
- 'Portunites alaskensis belongs to Portunites'
- 'Portunites insculpta belongs to Portunites'
- 'Portunites triangulum belongs to Portunites'
- 'Portunus belongs to Portunidae'
- 'Portunus (Portunus) belongs to Portunus' according to Weber 1795
- 'Pseudograpsus nudus is recombined as Hemigrapsus nudus'
- 'Pseudograpsus nudus belongs to Pseudograpsus' according to Dana 1851
- 'Pseudograpsus oregonensis is recombined as Hemigrapsus oregonensis'
- 'Pseudosquilla belongs to Chloridellidae'
- 'Pseudosquilla adelaidensis belongs to Pseudosquilla'
- 'Pugettia belongs to Majidae'
- 'Pugettia richii belongs to Pugettia'
- 'Pyromaia belongs to Majidae'
- 'Randallia belongs to Leucosiidae'
- 'Randallia pleistocenica belongs to Randallia'
- 'Ranidina belongs to Raninidae'
- 'Ranidina willapensis belongs to Ranidina'
- 'Ranina belongs to Raninidae'
- 'Ranina americana belongs to Ranina'
- 'Ranina tejoniana belongs to Ranina'
- 'Raninidae belongs to Gymnopleura'
- 'Raninoides belongs to Raninidae'
- 'Raninoides asper belongs to Raninoides'
- 'Raninoides dickersoni belongs to Raninoides'
- 'Raninoides eugenensis belongs to Raninoides'
- 'Raninoides fulgidus belongs to Raninoides'
- 'Raninoides lewisanus belongs to Raninoides'
- 'Raninoides vaderensis belongs to Raninoides'
- 'Raninoides washburnei belongs to Raninoides'
- 'Reptantia belongs to Decapoda'
- 'Scyllaridea belongs to Palinura'
- 'Scyra belongs to Majidae'
- 'Scyra acutifrons belongs to Scyra'
- 'Thalassinidea was reranked as a superfamily and belongs to Anomura'
- 'Uca belongs to Ocypodidae'
- 'Uca hamlini belongs to Uca'
- 'Uca oldroydi belongs to Uca'
- 'Upogebia belongs to Callianassidae'
- 'Upogebia (Upogebia) belongs to Upogebia' according to Leach 1814
- 'Upogebia (Upogebia) eocenica belongs to Upogebia (Upogebia)'
- 'Xanthidae belongs to Brachyrhyncha'
- 'Xanthodes leucomanus belongs to Xanthodes' according to Lockington 1876
- 'Xanthodes leucomanus is recombined as Lophopanopeus leucomanus'
- 'Xanthodes novemdentatus belongs to Xanthodes' according to Lockington 1876
- 'Xanthodes novemdentatus is recombined as Cycloxanthops novemdentatus'
- 'Zanthopsis belongs to Xanthidae'
- 'Zanthopsis hendersonianus belongs to Zanthopsis'
- 'Zanthopsis sternbergi belongs to Zanthopsis'
- 'Zanthopsis vulgaris belongs to Zanthopsis'