Opinions from A. D. Wright 1963
- 'Acanthambonia belongs to Acanthamboniinae'
- 'Acanthambonia portranensis belongs to Acanthambonia'
- 'Acanthamboniinae belongs to Obolidae'
- 'Acanthocrania belongs to Craniidae'
- 'Acanthocrania cracentis belongs to Acanthocrania'
- 'Acrotetidae belongs to Acrotretacea'
- 'Acrotretidae belongs to Acrotretacea'
- 'Acrotretinae belongs to Acrotretidae'
- 'Craniidae belongs to Craniacea'
- 'Discinidae is corrected as Disciniidae and belongs to Discinacea'
- 'Eoconulus belongs to Craniidae'
- 'Eoconulus transversus belongs to Eoconulus'
- 'Ephippelasma belongs to Acrotretinae'
- 'Glossellinae belongs to Obolidae'
- 'Leptobolus belongs to Glossellinae'
- 'Leptobolus rarus belongs to Leptobolus'
- 'Lingulella belongs to Lingulellinae'
- 'Lingulellinae belongs to Obolidae'
- 'Multispinula belongs to Siphonotretidae'
- 'Obolidae belongs to Obolacea'
- 'Orbiculoidea belongs to Orbiculoideinae'
- 'Orbiculoidea shallochensis belongs to Orbiculoidea' according to Reed 1917
- 'Orbiculoideinae belongs to Disciniidae'
- 'Paterula belongs to Paterulidae'
- 'Paterula perfecta belongs to Paterula' according to Cooper 1956
- 'Paterulidae belongs to Trimerellacea'
- 'Philhedrella belongs to Craniidae'
- 'Rowellella minuta belongs to Rowellella'
- 'Schizotreta belongs to Orbiculoideinae'
- 'Schizotreta concava belongs to Schizotreta'
- 'Siphonotretidae belongs to Siphonotretacea'
- 'Spondylotreta belongs to Acrotretinae'
- 'Spondylotreta parva belongs to Spondylotreta'
- 'Trematidae belongs to Discinacea'
- 'Trematis belongs to Trematidae'
- 'Trematis huronensis belongs to Trematis'