Opinions from L. E. Popov et al. 2000
- 'Altaethyrella belongs to Ancistrorhynchidae'
- 'Ancistrorhynchidae belongs to Ancistrorhynchoidea'
- 'Anoptambonites belongs to Hesperomenidae'
- 'Anoptambonites kovalevskii belongs to Anoptambonites'
- 'Atrypinidae belongs to Atrypoidea'
- 'Bokotorthis belongs to Plaesiomyidae'
- 'Christiania belongs to Christianiidae'
- 'Christianiidae belongs to Strophomenoidea'
- 'Craniopsidae belongs to Craniopsoidea'
- 'Dinorthis belongs to Plaesiomyidae'
- 'Dulankarella belongs to Leptellinidae'
- 'Dulankarella magna belongs to Dulankarella'
- 'Dzhebaglina belongs to Furcitellinae'
- 'Dzhebaglina plicata belongs to Dzhebaglina'
- 'Furcitellinae belongs to Strophomenidae'
- 'Glossellinae belongs to Obolidae'
- 'Hebertella belongs to Plectorthidae'
- 'Hesperomenidae belongs to Plectambonitoidea'
- 'Karomena belongs to Furcitellinae'
- 'Karomena squalida belongs to Karomena'
- 'Leptellinidae belongs to Plectambonitoidea'
- 'Nalivkinia belongs to Atrypinidae'
- 'Nalivkinia (Pronalivkinia) belongs to Nalivkinia' according to Rukavishnikova 1977
- 'Nalivkinia (Pronalivkinia) belongs to Nalivkinia'
- 'Obolidae belongs to Linguloidea'
- 'Oligorhynchiidae belongs to Ancistrorhynchoidea'
- 'Oxoplecia subcraegensis is recombined as Grammoplecia subcraegensis'
- 'Paracraniops belongs to Craniopsidae'
- 'Paraoligorhyncha belongs to Oligorhynchiidae'
- 'Parastrophina belongs to Parastrophinidae'
- 'Parastrophinidae belongs to Camerelloidea'
- 'Phaceloorthis belongs to Plectorthidae'
- 'Phaceloorthis recondita belongs to Phaceloorthis'
- 'Plaesiomyidae belongs to Orthoidea'
- 'Plaesiomys belongs to Plaesiomyidae'
- 'Plaesiomys fidelis belongs to Plaesiomys'
- 'Plectorthidae belongs to Orthoidea'
- 'Rhynchotrema otarica is recombined as Altaethyrella otarica'
- 'Schizophorella kasakhstanica is recombined as Bokotorthis kasachstanica'
- 'Schizophorella plicadua is recombined as Bokotorthis plicadua'
- 'Shlyginia belongs to Leptellinidae'
- 'Sowerbyella belongs to Sowerbyellidae'
- 'Sowerbyella (Sowerbyella) akdombakensis belongs to Sowerbyella (Sowerbyella)'
- 'Sowerbyellidae belongs to Plectambonitoidea'
- 'Strophomena belongs to Strophomeninae'
- 'Strophomenidae belongs to Strophomenoidea'
- 'Strophomeninae belongs to Strophomenidae'
- 'Sulcatospira belongs to Atrypinidae'
- 'Triplesiidae belongs to Triplesioidea'