Opinions from F. B. Meek and A. H. Worthen 1860
- 'Aviculopecten coxanus belongs to Aviculopecten'
- 'Aviculopecten interlineatus belongs to Aviculopecten'
- 'Aviculopecten pellucidus belongs to Aviculopecten'
- 'Bellerophon crassus belongs to Bellerophon'
- 'Cardiomorpha radiata belongs to Cardiomorpha'
- 'Cyrtoceras curtum belongs to Cyrtoceras'
- 'Eulima peracuta belongs to Eulima'
- 'Eunema salteri belongs to Eunema'
- 'Euomphalus planodorsatus belongs to Euomphalus'
- 'Euomphalus umbilicatus belongs to Euomphalus'
- 'Goniatites lyoni belongs to Goniatites'
- 'Leda (Yoldia) levistriata belongs to Leda (Yoldia)'
- 'Loxonema cerithiformis belongs to Loxonema'
- 'Loxonema nitidula belongs to Loxonema'
- 'Loxonema rugosa belongs to Loxonema'
- 'Loxonema scitula belongs to Loxonema'
- 'Macrocheilus intercalaris belongs to Macrocheilus'
- 'Macrocheilus medialis belongs to Macrocheilus'
- 'Naticopsis nodosus belongs to Naticopsis'
- 'Nautilus sangamonense belongs to Nautilus'
- 'Palasterina (Schoenaster) belongs to Palasterina'
- 'Palasterina (Schoenaster) fimbriata belongs to Palasterina (Schoenaster)'
- 'Pecten tenuilineatus belongs to Pecten'
- 'Platyostoma nana belongs to Platyostoma'
- 'Platyostoma tumida belongs to Platyostoma'
- 'Pleurotomaria chesterensis belongs to Pleurotomaria'
- 'Pleurotomaria granulostriata belongs to Pleurotomaria'
- 'Pleurotomaria pratteni belongs to Pleurotomaria'
- 'Pleurotomaria scitula belongs to Pleurotomaria'
- 'Pleurotomaria shumardi belongs to Pleurotomaria'
- 'Pleurotomaria speciosa belongs to Pleurotomaria'
- 'Pleurotomaria subconstricta belongs to Pleurotomaria'
- 'Pleurotomaria subsinuata belongs to Pleurotomaria'
- 'Pleurotomaria turbiniformis belongs to Pleurotomaria'
- 'Schizodus chesterensis belongs to Schizodus'
- 'Solemya [misspelled as Solenomya] belongs to Pelecypoda'
- 'Soleniscus typicus belongs to Soleniscus'
- 'Solenomya radiata belongs to Solenomya'