Opinions from J. Hall 1852
- 'Acroculia angulata belongs to Acroculia'
- 'Acroculia niagarensis belongs to Acroculia'
- 'Anomia biloba is recombined as Spirifer bilobus'
- 'Asaphus corycoeus is recombined as Proetus corycoeus'
- 'Atrypa emacerata belongs to Atrypa'
- 'Atrypa obliquata belongs to Atrypa'
- 'Bucania angustata belongs to Bucania'
- 'Bucania bellapuncta belongs to Bucania'
- 'Bucania stigmosa belongs to Bucania'
- 'Cyclolites rotuloides belongs to Cyclolites'
- 'Cyclonema (Cyclonema) belongs to Cyclonema'
- 'Cyclonema obsoleta belongs to Cyclonema'
- 'Cyclonema ventricosa belongs to Cyclonema'
- 'Cyclostoma pervetusta is recombined as Pleurotomaria pervetusta'
- 'Euomphalus hemisphericus is recombined as Platyostoma hemispherica'
- 'Euomphalus sulcata is recombined as Cyclonema sulcata'
- 'Littorina cancellata is recombined as Cyclonema cancellata'
- 'Loxonema boydii belongs to Loxonema'
- 'Loxonema subulata is recombined as Murchisonia subulata'
- 'Megalomus belongs to Bivalvia'
- 'Murchisonia bivittata belongs to Murchisonia'
- 'Murchisonia loganii belongs to Murchisonia'
- 'Murchisonia longispira belongs to Murchisonia'
- 'Murchisonia macrospira belongs to Murchisonia'
- 'Murchisonia major belongs to Murchisonia'
- 'Murchisonia turritiformis belongs to Murchisonia'
- 'Palaeaster niagarensis belongs to Palaeaster'
- 'Paradoxides boltoni is recombined as Platynotus boltoni' according to Conrad 1838
- 'Paradoxides boltoni is recombined as Arctinurus boltoni' according to Castelnau 1843
- 'Paradoxides boltoni is recombined as Lichas boltoni'
- 'Phacops trisulcata belongs to Phacops'
- 'Planorbis trilobatus is recombined as Bucania trilobatus'
- 'Platynotus is replaced by Arctinurus' according to Castelnau 1843
- 'Platyostoma niagarensis belongs to Platyostoma'
- 'Pleurotomaria bilix is recombined as Cyclonema bilix'
- 'Pleurotomaria bispiralis belongs to Pleurotomaria'
- 'Pleurotomaria perlata belongs to Pleurotomaria'
- 'Pleurotomaria solarioides belongs to Pleurotomaria'
- 'Stropheodonta belongs to Articulata'
- 'Strophomena corrugata is recombined as Leptaena corrugata'
- 'Strophomena demissa is recombined as Stropheodonta demissa'
- 'Subulites abbreviatus belongs to Subulites'
- 'Subulites ventricosus belongs to Subulites'