Opinions from G. A. Cooper 1976

  • 'Arctohedra belongs to Protorthidae'
  • 'Glyptoria belongs to Protorthidae'
  • 'Glyptoria glypta belongs to Glyptoria'
  • 'Israelaria belongs to Protorthidae'
  • 'Israelaria parnesi belongs to Israelaria'
  • 'Kotujella belongs to Protorthidae'
  • 'Kutorginacea belongs to Kutorginida'
  • 'Leioria belongs to Leioriidae'
  • 'Leioria bentori belongs to Leioria'
  • 'Leioria elongata belongs to Leioria'
  • 'Leioriidae belongs to Orthacea'
  • 'Lingulacea belongs to Lingulida'
  • 'Nisusia (Jamesella) was reranked as Jamesella and belongs to Protorthidae'
  • 'Obolellacea belongs to Obolellida'
  • 'Obolellidae belongs to Obolellacea'
  • 'Obolidae belongs to Lingulacea'
  • 'Obolinae belongs to Obolidae'
  • 'Obolus radifer belongs to Obolus' according to Richter and Richter 1941
  • 'Obolus radifer is recombined as Trematosia radifer'
  • 'Orthacea belongs to Orthidina'
  • 'Orthidina belongs to Orthida'
  • 'Paterina alata belongs to Paterina' according to King 1923
  • 'Paterina alata is recombined as Psiloria alata'
  • 'Protorthacea belongs to Orthidina'
  • 'Protorthidae belongs to Protorthacea'
  • 'Protorthis belongs to Protorthidae'
  • 'Psiloria belongs to Protorthidae'
  • 'Psiloria dayei belongs to Psiloria'
  • 'Psiloria pauperata belongs to Psiloria'
  • 'Trematobolus belongs to Obolellidae'
  • 'Trematobolus palaestinensis belongs to Trematobolus' according to Richter and Richter 1941
  • 'Trematobolus palaestinensis belongs to Trematobolus'
  • 'Trematosia belongs to Yorkiidae'
  • 'Trematosia undulata belongs to Trematosia'
  • 'Yorkiidae belongs to Kutorginacea'