Opinions from W. J. Kennedy et al. 1988
- 'Acanthoceras belongs to Acanthoceratinae'
- 'Acanthoceras alvaradoense belongs to Acanthoceras' according to Moreman 1942
- 'Acanthoceras alvaradoense is a subjective synonym of Acanthoceras amphibolum'
- 'Acanthoceras amphibolum belongs to Acanthoceras'
- 'Acanthoceras hazzardi is a subjective synonym of Acanthoceras amphibolum'
- 'Acanthoceras johnsonianum belongs to Acanthoceras' according to Stephenson 1955
- 'Acanthoceras johnsonianum is recombined as Cunningtoniceras johnsonianum'
- 'Acanthocerataceae belongs to Ammonitina'
- 'Acanthoceratidae belongs to Acanthocerataceae'
- 'Acanthoceratinae belongs to Acanthoceratidae'
- 'Anisoceras belongs to Anisoceratidae'
- 'Anisoceratidae belongs to Turrilitaceae'
- 'Cunningtoniceras belongs to Acanthoceratinae'
- 'Desmoceras belongs to Desmoceratinae'
- 'Desmocerataceae belongs to Ammonitina'
- 'Desmoceratidae belongs to Desmocerataceae'
- 'Desmoceratinae belongs to Desmoceratidae'
- 'Hamites plicatilis is recombined as Anisoceras plicatile'
- 'Inoceramus arvanus belongs to Inoceramus'
- 'Mantelliceras sellardsi is recombined as Tarrantoceras sellardsi'
- 'Moremanoceras belongs to Desmoceratinae'
- 'Moremanoceras straini belongs to Moremanoceras'
- 'Ostrea beloiti belongs to Ostrea'
- 'Ostrea elegantula belongs to Ostrea' according to Newberry 1876
- 'Ostrea elegantula is a nomen oblitum'
- 'Paracompsoceras belongs to Acanthoceratinae'
- 'Paracompsoceras landisi belongs to Paracompsoceras'
- 'Pseudouhligella was reranked as Desmoceras (Pseudouhligella) and belongs to Desmoceras'
- 'Tarrantoceras belongs to Acanthoceratinae'
- 'Tarrantoceras lillianense is a subjective synonym of Tarrantoceras sellardsi'
- 'Tarrantoceras multicostatum is a subjective synonym of Tarrantoceras sellardsi'
- 'Tarrantoceras rotatile is a subjective synonym of Tarrantoceras sellardsi'
- 'Tarrantoceras stantoni is a subjective synonym of Tarrantoceras sellardsi'
- 'Turrilitaceae belongs to Ancyloceratina'
- 'Turrilites belongs to Turrilitidae'
- 'Turrilites (Turrilites) belongs to Turrilites'
- 'Turrilites acutus is recombined as Turrilites (Turrilites) acutus'
- 'Turrilitidae belongs to Turrilitaceae'