Opinions from G. D. Webster 2006
- 'Agassizocrinacea is corrected as Agassizocrinoidea and belongs to Cladida'
- 'Agassizocrinidae belongs to Agassizocrinoidea'
- 'Arrectocrinus belongs to Catacrinidae'
- 'Canistrocrinus belongs to Tanaocrinidae'
- 'Carabocrinus tuberculatus belongs to Carabocrinus'
- 'Cibolocrinus belongs to Mespilocrinidae'
- 'Cibolocrinus symmetricus is recombined as Stuartwellercrinus symmetricus'
- 'Cibolocrinus texanus is recombined as Stuartwellercrinus texanus'
- 'Cibolocrinus turbinatus is recombined as Stuartwellercrinus turbinatus'
- 'Compsocrinus belongs to Tanaocrinidae'
- 'Cyathocrinacea is corrected as Cyathocrinitacea and belongs to Cyathocrinida'
- 'Cyathocrinina was reranked as the order Cyathocrinida and belongs to Cladida'
- 'Delocrinus excavatus is recombined as Perimestocrinus excavatus'
- 'Delocrinus major is recombined as Arrectocrinus major'
- 'Delocrinus texanus is recombined as Arrectocrinus texanus'
- 'Dendrocrinus minutus belongs to Dendrocrinus'
- 'Eomyelodactylus belongs to Myelodactylidae'
- 'Erisocrinidae belongs to Erisocrinacea'
- 'Erisocrinus belongs to Erisocrinidae'
- 'Lecanocrinacea is corrected as Lecanocrinoidea and belongs to Sagenocrinida'
- 'Mespilocrinidae belongs to Lecanocrinoidea'
- 'Neozeacrinus belongs to Zeacrinitidae'
- 'Parulocrinus belongs to Cromyocrinidae'
- 'Perimestocrinus belongs to Pirasocrinidae'
- 'Phialocrinus americanus is recombined as Parulocrinus americanus'
- 'Proexenocrinus belongs to Tanaocrinidae'
- 'Reteocrinus fimbriatus belongs to Reteocrinus'
- 'Stuartwellercrinus belongs to Spaniocrinidae'
- 'Tanaocrinidae belongs to Xenocrinoidea'
- 'Xenocrinacea is corrected as Xenocrinoidea and belongs to Compsocrinina'