Opinions from A. F. Foerste 1923
- 'Bellerophon centervillensis belongs to Bellerophon'
- 'Bellerophon recurvus belongs to Bellerophon'
- 'Bellerophon troosti belongs to Bellerophon'
- 'Bellerophon troosti burginensis belongs to Bellerophon troosti'
- 'Coelocaulus oehlerti belongs to Coelocaulus'
- 'Cyclonema daytonensis belongs to Cyclonema'
- 'Cyclonema fluctuatum belongs to Cyclonema'
- 'Cyclonema gyronemoides belongs to Cyclonema'
- 'Cyclostoma pervetusta is recombined as Straparollus pervetusta'
- 'Cyrtolites youngi is recombined as Oxydiscus youngi'
- 'Diaphorostoma daytonense belongs to Diaphorostoma'
- 'Helictes aequilaterus is recombined as Cryptaulus aequilatera'
- 'Hormotoma centervillensis belongs to Hormotoma'
- 'Hormotoma salteri belongs to Murchisonia (Hormotoma)'
- 'Hormotoma salteri canadensis is recombined as Hormotoma canadensis'
- 'Hormotoma subangulata belongs to Murchisonia (Hormotoma)'
- 'Hormotoma trilineata belongs to Hormotoma'
- 'Liospira depressum belongs to Liospira'
- 'Lophospira (Ruedemannia) centervillensis belongs to Lophospira (Ruedemannia)'
- 'Lophospira bucheri belongs to Lophospira'
- 'Lophospira ehlersi belongs to Lophospira'
- 'Lophospira lirata is recombined as Ruedemannia lirata'
- 'Lophospira peracuta belongs to Lophospira'
- 'Lophospira producta belongs to Lophospira'
- 'Lophospira trochonemoides belongs to Lophospira'
- 'Loxonema subulata is recombined as Hormotoma subulata'
- 'Murchisonia bowdeni is recombined as Lophospira bowdeni'
- 'Murchisonia gracilis is recombined as Hormotoma gracilis'
- 'Murchisonia sumnerensis is recombined as Lophospira sumnerensis'
- 'Onychochilus reticulatum belongs to Onychochilus'
- 'Paleopupa abrupta is recombined as Onychochilus abruptum'
- 'Platyostoma niagarense belongs to Platyostoma' according to Foerste 1887
- 'Diaphorostoma niagarense is replaced by Diaphorostoma daytonense'
- 'Platyostoma niagarensis is recombined as Diaphorostoma niagarense'
- 'Pleurotomaria bilix is recombined as Cyclonema bilix'
- 'Pleurotomaria filitexta is recombined as Cryptaulus filitexta'
- 'Pleurotomaria helicina is recombined as Cryptaulus helicinia'
- 'Pleurotomaria inexpectans is recombined as Ruedemannia inexpectans'
- 'Pleurotomaria micula is recombined as Liospira micula'
- 'Pleurotomaria robusta is recombined as Ruedemannia robusta'
- 'Pleurotomaria rotalia is recombined as Trepospira rotalia'
- 'Proetus vaningeni belongs to Proetus'
- 'Ruedemannia was reranked as Lophospira (Ruedemannia) and belongs to Lophospira'
- 'Straparollus hippolyta belongs to Straparollus'
- 'Straparollus mopsus belongs to Straparollus'
- 'Straparollus paveyi belongs to Straparollus'