Opinions from R. S. Bassler 1915
- 'Atrypa emacerata is recombined as Rhynchonella emacerata'
- 'Atrypa neglecta is recombined as Camarotoechia (Stegerhynchus) neglecta'
- 'Bathyurus ellipticus is recombined as Petigurus ellipticus'
- 'Bellerophon cancellatus is recombined as Sinuites cancellatus'
- 'Bellerophon cassinensis is recombined as Sinuites cassinensis'
- 'Bellerophon chicagoensis is recombined as Tremanotus chicagoensis'
- 'Bellerophon globularis is recombined as Sinuites globularis'
- 'Bucania angustata is recombined as Tremanotus angustata'
- 'Bucania crassolare is recombined as Tremanotus crassolare'
- 'Bucania nashvillensis belongs to Bucania'
- 'Bucaniella esthona is recombined as Kokenospira esthona'
- 'Buthotrephis lesquereuxi belongs to Buthotrephis'
- 'Conocephalites hartii [misspelled as Dikelocephalus hartti] belongs to Dikelocephalus'
- 'Conradella bellula is recombined as Phragmolites bellulus'
- 'Conradella similis is recombined as Phragmolites similis'
- 'Cyclonema textile is recombined as Strophostylus textilis'
- 'Cyrtoceras indianensis is corrected as Cyrtoceras indianense and belongs to Cyrtoceras'
- 'Cyrtolites dyeri is recombined as Phragmolites dyeri'
- 'Cyrtolites elegans is recombined as Phragmolites elegans'
- 'Cyrtolites nitidula is recombined as Temnodiscus nitidula'
- 'Dikelocephalus corax is recombined as Apatokephalus corax'
- 'Eunema cerithioides is recombined as Trochonema (Eunema) cerithioides'
- 'Euomphalus (Cyclonema) rugaelineata is recombined as Poleumita rugaelineata'
- 'Euomphalus gyroceras is recombined as Eccyliomphalus gyroceras'
- 'Euomphalus polygyratus is recombined as Polygyrata polygyrata'
- 'Euomphalus sanctisabae is recombined as Straparollus sanctisabae'
- 'Glyptoceras is a subjective synonym of Cyrtoceras'
- 'Hormotoma winnipegensis belongs to Murchisonia (Hormotoma)'
- 'Kokenia costalis is recombined as Kokenospira costalis'
- 'Lichas halli is recombined as Amphilichas halli'
- 'Lingula briseis belongs to Lingula'
- 'Lingula clintoni belongs to Lingula' according to Vanuxem 1842
- 'Lingula clintoni belongs to Lingula'
- 'Lingula cobourgensis belongs to Lingula'
- 'Lingula cuneata belongs to Lingula'
- 'Lingula curta belongs to Lingula'
- 'Lingula elegantula is recombined as Lingula (Pseudolingula) elegantula'
- 'Lingula elongata belongs to Lingula'
- 'Lingula eva belongs to Lingula' according to Billings 1861
- 'Lingula eva belongs to Lingula'
- 'Lingula hurlbuti is recombined as Lingula (Palaeoglossa) hurlbuti'
- 'Lingula huronensis belongs to Lingula'
- 'Lingula ingens belongs to Lingula'
- 'Lingula lamellata belongs to Lingula' according to Hall 1843
- 'Lingula lamellata belongs to Lingula'
- 'Lingula minima belongs to Lingula' according to Sowerby 1839
- 'Lingula minima belongs to Lingula'
- 'Lingula minnesotensis is a subjective synonym of Lingula elderi'
- 'Lingula nympha belongs to Lingula'
- 'Lingula oblata belongs to Lingula'
- 'Lingula obtusa belongs to Lingula'
- 'Lingula perovata is recombined as Lingula (Palaeoglossa) perovata'
- 'Lingula philomela belongs to Lingula'
- 'Lingula progne belongs to Lingula'
- 'Lingula rectilateralis is recombined as Lingula (Pseudolingula) rectilateralis'
- 'Lingula riciniformis belongs to Lingula'
- 'Lingula trentonensis belongs to Lingula' according to Conrad 1842
- 'Lingula trentonensis is recombined as Lingula (Palaeoglossa) trentonensis'
- 'Lingula trentonensis is recombined as Lingula (Glossina) trentonensis' according to Grabau and Shimer 1907
- 'Lingula whitfieldi belongs to Lingula' according to Ulrich 1889
- 'Lingula whitfieldi belongs to Lingula'
- 'Lingulepis morsensis is corrected as Lingulepis morsii and belongs to Lingulepis' according to Miller 1889
- 'Lingulepis morsensis is recombined as Lingula morsii' according to Hall and Clarke 1892
- 'Lingulepis morsensis is recombined as Lingula morsei'
- 'Littorina cancellata is recombined as Strophostylus cancellatus'
- 'Maclurea logani is recombined as Maclurites logani'
- 'Microdiscus quadricostatus is recombined as Ampyx quadricostatus'
- 'Murchisonia ventricosa is recombined as Lophospira ventricosa'
- 'Olenus logani is recombined as Loganellus logani'
- 'Orthis lamellose is recombined as Orthidium lamellosum'
- 'Orthis macleodi is recombined as Dalmanella macleodi'
- 'Orthis pogonipensis is recombined as Pianodema pogonipensis'
- 'Orthoceras marcoui is recombined as Cameroceras marcoui'
- 'Orthoceras olorus is recombined as Cycloceras olorus'
- 'Orthoceras olorus baffinense is recombined as Cycloceras olorus baffinense'
- 'Palaeoglossa was reranked as Lingula (Palaeoglossa) and belongs to Lingula'
- 'Platyceras brownsportensis is recombined as Diaphorostoma brownsportense'
- 'Pleurotomaria arachne is recombined as Lophospira arachne'
- 'Pleurotomaria hunterensis is recombined as Polygyrata hunterensis'
- 'Protowarthia granistriata is recombined as Sinuites granistriatus'
- 'Protowarthia obesus is recombined as Sinuites obesus'
- 'Protowarthia pervoluta is recombined as Sinuites pervoluta'
- 'Protowarthia planodorsata is recombined as Sinuites planodorsatus'
- 'Protowarthia subcompressa is recombined as Sinuites subcompressa'
- 'Pseudolingula was reranked as Lingula (Pseudolingula) and belongs to Lingula'
- 'Rhynchonella (Stegerhynchus) is reassigned into Camarotoechia'
- 'Camarotoechia (Stegerhynchus) scobina is a subjective synonym of Camarotoechia (Stegerhynchus) neglecta'
- 'Strophomena minnesotensis is recombined as Rafinesquina minnesotensis'
- 'Subulites parvulus is recombined as Cyrtospira parvulus'
- 'Tremanotus trigonostoma belongs to Tremanotus'