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'