Opinions from R. L. Parsley 1981
- 'Amecystis belongs to Pleurocystitidae'
- 'Amygdalocystites belongs to Amygdalocystitidae'
- 'Amygdalocystites florealis belongs to Amygdalocystites' according to Billings 1854
- 'Amygdalocystites florealis belongs to Amygdalocystites'
- 'Amygdalocystitidae belongs to Comarocystitida'
- 'Anomalocystitidae belongs to Anomalocystitida'
- 'Carabocrinidae belongs to Cyathocrinoidea'
- 'Carabocrinus belongs to Carabocrinidae'
- 'Comarocystitida belongs to Paracrinoidea'
- 'Cupulocrinus belongs to Dendrocrinidae'
- 'Cyathocrinoidea belongs to Hybocrinida'
- 'Cyclocystoidea belongs to Echinozoa'
- 'Cyclocystoides belongs to Cyclocystoididae'
- 'Cyclocystoididae belongs to Cyclocystoidea'
- 'Dendrocrinidae belongs to Dendrocrinina'
- 'Dendrocrinina belongs to Cladida'
- 'Enoploura belongs to Anomalocystitidae'
- 'Enoploura punctata belongs to Enoploura' according to Bassler 1932
- 'Enoploura punctata belongs to Enoploura'
- 'Heterocrinidae belongs to Disparida'
- 'Heterocrinus belongs to Heterocrinidae'
- 'Hybocrinida belongs to Inadunata'
- 'Hybocrinidae belongs to Hybocrinida'
- 'Hybocrinus belongs to Hybocrinidae'
- 'Hybocrinus tumidus belongs to Hybocrinus' according to Billings 1857
- 'Hybocrinus tumidus belongs to Hybocrinus'
- 'Hybocystites belongs to Hybocrinidae'
- 'Hybocystites problematicus belongs to Hybocystites'
- 'Inadunata belongs to Crinoidea'
- 'Paracrinoidea belongs to Paracrinozoa'
- 'Paracrinozoa belongs to Echinodermata'
- 'Pleurocystites laevis is recombined as Amecystis laevis'
- 'Pleurocystitidae belongs to Glyptocystitida'