Opinions from A. K. Miller and W. M. Furnish 1940
- 'Adrianites defordi belongs to Adrianites'
- 'Adrianites dunbari belongs to Adrianites'
- 'Adrianites marathonensis is a subjective synonym of Waagenoceras dieneri'
- 'Agathiceras girtyi belongs to Agathiceras'
- 'Agathiceras texanum is recombined as Texoceras texanum'
- 'Artinskia huecoensis belongs to Artinskia'
- 'Atsabites williamsi belongs to Atsabites'
- 'Cibolites uddeni belongs to Cibolites'
- 'Daraelites scotti belongs to Daraelites'
- 'Eoasianites ruzencevi belongs to Eoasianites'
- 'Eothinites hessensis belongs to Eothinites'
- 'Epipronorites is a subjective synonym of Neopronorites'
- 'Eumedlicottia crotonensis is a subjective synonym of Medlicottia whitneyi'
- 'Eumedlicottia guadalupensis is a subjective synonym of Medlicottia burckhardti'
- 'Gastrioceras altudense is recombined as Pseudogastrioceras altudense'
- 'Gastrioceras modestum is recombined as Eoasianites modestus'
- 'Gastrioceras roadense is recombined as Paragastrioceras roadense'
- 'Gastrioceras serratum is recombined as Pseudogastrioceras serratum'
- 'Marathonites delawareanus is a subjective synonym of Texoceras texanum'
- 'Marathonites sellardsi is recombined as Peritrochia sellardsi'
- 'Medlicottia burckhardti belongs to Medlicottia'
- 'Medlicottia kingorum belongs to Medlicottia'
- 'Medlicottia smithi belongs to Medlicottia'
- 'Medlicottia whitneyi belongs to Medlicottia'
- 'Metalegoceras colemanense belongs to Metalegoceras'
- 'Metalegoceras schucherti belongs to Metalegoceras'
- 'Neopronorites bakeri belongs to Neopronorites'
- 'Paraceltites elegans belongs to Paraceltites'
- 'Paraceltites multicostatus belongs to Paraceltites'
- 'Paraceltites multiliratus is recombined as Atsabites multiliratus'
- 'Paraceltites sellardsi belongs to Paraceltites'
- 'Paragastrioceras beedei is recombined as Pseudogastrioceras beedei'
- 'Paragastrioceras deciense is recombined as Eoasianites deciensis'
- 'Paralecanites altudensis is recombined as Paraceltites altudensis'
- 'Paralegoceras incertum is recombined as Plummerites incertus'
- 'Paraprolecanites sandbergeri is replaced by Daraelites scotti'
- 'Peritrochia dunbari belongs to Peritrochia'
- 'Peritrochia erebus belongs to Peritrochia'
- 'Perrinites boesei is recombined as Properrinites boesei'
- 'Perrinites tardus belongs to Perrinites'
- 'Properrinites denhami belongs to Properrinites'
- 'Properrinites mooreae belongs to Properrinites'
- 'Properrinites vicinus belongs to Properrinites'
- 'Propinacoceras insulcatum belongs to Propinacoceras' according to Smith 1927
- 'Propinacoceras insulcatum is replaced by Medlicottia smithi'
- 'Propinacoceras knighti belongs to Propinacoceras'
- 'Pseudogastrioceras globulosissimum is a subjective synonym of Pseudogastrioceras roadense'
- 'Rhiphaeites planulatus is recombined as Eothinites planulatus'
- 'Stacheoceras bowmani is recombined as Popanoceras bowmani'
- 'Stacheoceras rothi belongs to Stacheoceras'
- 'Strigogoniatites fountaini belongs to Strigogoniatites'
- 'Timorites uddeni belongs to Timorites'
- 'Uddenites oweni belongs to Uddenites'
- 'Waagenoceras clavatum is a subjective synonym of Waagenoceras guadalupense'
- 'Waagenoceras dieneri belongs to Waagenoceras'
- 'Waagenoceras girtyi belongs to Waagenoceras'
- 'Waagenoceras guadalupense belongs to Waagenoceras'
- 'Waagenoceras richardsoni is a subjective synonym of Waagenoceras dieneri'
- 'Xenaspis skinneri belongs to Xenaspis'