Opinions from D. W. Fisher 1962
- 'Ambrolinevitus belongs to Sulcavitidae'
- 'Bactrotheca belongs to Orthothecidae'
- 'Barella belongs to Hyolithellidae'
- 'Biconulites belongs to Problematica'
- 'Calyptoptomatida was reranked as a class and belongs to Metazoa'
- 'Camerotheca belongs to Camerothecidae'
- 'Camerothecida belongs to Calyptoptomatida'
- 'Camerothecidae belongs to Camerothecina'
- 'Camerothecina belongs to Camerothecida'
- 'Carinolithes belongs to Hyolithidae'
- 'Ceratotheca belongs to Ceratothecidae'
- 'Ceratothecidae belongs to Hyolithina'
- 'Circotheca belongs to Orthothecidae'
- 'Coleolidae belongs to Problematica'
- 'Coleoloides belongs to Coleolidae'
- 'Coleolus belongs to Coleolidae'
- 'Coleoprion belongs to Coleolidae'
- 'Conchicolites belongs to Cornulitidae'
- 'Cornulitella belongs to Cornulitidae'
- 'Cornulites belongs to Cornulitidae'
- 'Cornulitidae belongs to Problematica'
- 'Cryptocaris belongs to Orthothecidae'
- 'Diplotheca belongs to Diplothecidae'
- 'Diplothecidae belongs to Diplothecina'
- 'Diplothecina belongs to Camerothecida'
- 'Discinella belongs to Hyolithellidae'
- 'Dorsolinevitus belongs to Sulcavitidae'
- 'Globorilida belongs to Calyptoptomatida'
- 'Globorilidae belongs to Globorilida'
- 'Globorilus belongs to Globorilidae'
- 'Helenia belongs to Hyolithidae'
- 'Hyolithellidae belongs to Hyolithelminthes'
- 'Hyolithellus belongs to Hyolithellidae'
- 'Hyolithes belongs to Hyolithidae'
- 'Hyolithus is a misspelling of Hyolithes'
- 'Hyolithis is a misspelling of Hyolithes'
- 'Hyolithida belongs to Calyptoptomatida'
- 'Hyolithina belongs to Hyolithida'
- 'Kolihaia belongs to Cornulitidae'
- 'Kygmaeoceras belongs to Calyptoptomatida'
- 'Lapworthella belongs to Problematica'
- 'Lentitheca belongs to Orthothecidae'
- 'Linevitus belongs to Sulcavitidae'
- 'Matthevia belongs to Mattheviidae'
- 'Mattheviidae belongs to Matthevina'
- 'Matthevina belongs to Hyolithida'
- 'Mobergella belongs to Hyolithellidae'
- 'Orthotheca belongs to Orthothecidae'
- 'Orthothecidae belongs to Hyolithina'
- 'Paoshanella belongs to Coleolidae'
- 'Pharetrella belongs to Calyptoptomatida'
- 'Phragmotheca belongs to Calyptoptomatida'
- 'Polylopia belongs to Coleolidae'
- 'Pseudorthotheca belongs to Torellellidae'
- 'Pterygotheca belongs to Pterygothecidae'
- 'Pterygothecidae belongs to Hyolithina'
- 'Quadrotheca belongs to Orthothecidae'
- 'Quinquelithes belongs to Calyptoptomatida'
- 'Quinquelithes pavonaceus belongs to Quinquelithes' according to Syssoiev 1958
- 'Rushtonia belongs to Torellellidae'
- 'Salopiella belongs to Coleolidae'
- 'Semielliptotheca belongs to Orthothecidae'
- 'Spirodentalium belongs to Coleolidae'
- 'Stenothecopsis belongs to Problematica'
- 'Sulcavitidae belongs to Hyolithina'
- 'Sulcavitus belongs to Sulcavitidae'
- 'Torellella belongs to Torellellidae'
- 'Torellellidae belongs to Hyolithelminthes'
- 'Trapezotheca belongs to Orthothecidae'
- 'Trapezovitus belongs to Sulcavitidae'
- 'Virgulaxonaria belongs to Pterygothecidae'