Opinions from E. Klaamann 1964
- 'Alveolitidae belongs to Alveolitina'
- 'Alveolitina belongs to Favositida'
- 'Angopora hisingeri belongs to Angopora' according to Jones 1936
- 'Angopora tenuicula belongs to Angopora' according to Klaamann 1961
- 'Cladopora belongs to Thamnoporidae'
- 'Cladopora perrara belongs to Cladopora'
- 'Cladopora seriata belongs to Cladopora' according to Hall 1851
- 'Coenites belongs to Coenitinae'
- 'Coenites juniperinus belongs to Coenites' according to Eichwald 1829
- 'Coenites orientalis is recombined as Placocoenites orientalis'
- 'Coenitidae belongs to Alveolitina'
- 'Coenitinae belongs to Coenitidae'
- 'Favosites belongs to Favositinae'
- 'Favosites abnormis belongs to Favosites' according to Poulsen 1941
- 'Favosites adaverensis belongs to Favosites' according to Sokolov 1951
- 'Favosites antiquus belongs to Favosites' according to Sokolov 1951
- 'Favosites aspera is recombined as Palaeofavosites aspera'
- 'Favosites bowerbanki belongs to Favosites' according to Milne-Edwards and Haime 1851
- 'Favosites desolatus belongs to Favosites' according to Klaamann 1961
- 'Favosites exilis belongs to Favosites' according to Sokolov 1952
- 'Favosites fallax belongs to Favosites' according to Sokolov 1951
- 'Favosites favosiformis belongs to Favosites' according to Sokolov 1951
- 'Favosites favosus belongs to Favosites' according to Goldfuss 1826
- 'Favosites gothlandicus belongs to Favosites' according to Lamarck 1816
- 'Favosites hisingeri belongs to Favosites' according to Milne-Edwards and Haime 1851
- 'Favosites ingens belongs to Favosites' according to Klaamann 1962
- 'Favosites jaaniensis belongs to Favosites' according to Sokolov 1952
- 'Favosites kalevi belongs to Favosites' according to Klaamann 1962
- 'Favosites lichenarioides belongs to Favosites' according to Sokolov 1952
- 'Favosites mirandus belongs to Favosites' according to Sokolov 1952
- 'Favosites multicarinatus belongs to Favosites' according to Sokolov 1952
- 'Favosites oculiporoides belongs to Favosites' according to Sokolov 1952
- 'Favosites praemaximus belongs to Favosites' according to Sokolov 1951
- 'Favosites privatus belongs to Favosites' according to Sokolov 1951
- 'Favosites serratus belongs to Favosites' according to Sokolov 1952
- 'Favosites subfavosus belongs to Favosites' according to Klaamann 1962
- 'Favosites subforbesi belongs to Favosites' according to Sokolov 1952
- 'Favositida belongs to Tabulata'
- 'Favositidae belongs to Favositina'
- 'Favositina belongs to Favositida'
- 'Favositinae belongs to Favositidae'
- 'Mesofavosites belongs to Palaeofavositinae'
- 'Mesofavosites alveolitoides belongs to Mesofavosites' according to Sokolov 1952
- 'Mesofavosites bonus belongs to Mesofavosites' according to Sokolov 1952
- 'Mesofavosites dualis belongs to Mesofavosites' according to Sokolov 1951
- 'Mesofavosites fleximurinus belongs to Mesofavosites' according to Sokolov 1951
- 'Mesofavosites fortis belongs to Mesofavosites'
- 'Mesofavosites imbellis belongs to Mesofavosites' according to Klaamann 1961
- 'Mesofavosites inferior belongs to Mesofavosites' according to Sokolov 1951
- 'Mesofavosites kiltsiensis belongs to Mesofavosites' according to Klaamann 1959
- 'Mesofavosites major belongs to Mesofavosites' according to Sokolov 1952
- 'Mesofavosites multiporus belongs to Mesofavosites' according to Sokolov 1951
- 'Mesofavosites obliquus belongs to Mesofavosites' according to Sokolov 1951
- 'Mesofavosites secundus belongs to Mesofavosites' according to Klaamann 1961
- 'Mesofavosites silicificatus belongs to Mesofavosites' according to Klaamann 1959
- 'Mesofavosites similis belongs to Mesofavosites' according to Sokolov 1951
- 'Mesofavosites validus belongs to Mesofavosites'
- 'Multisolenia belongs to Palaeofavositinae'
- 'Multisolenia excelsa belongs to Multisolenia' according to Klaamann 1961
- 'Multisolenia prisca is recombined as Priscosolenia prisca'
- 'Multisolenia prisca belongs to Multisolenia' according to Sokolov 1962
- 'Multisolenia temperans belongs to Multisolenia' according to Klaamann 1962
- 'Multisolenia tortuosa belongs to Multisolenia' according to Fritz 1937
- 'Multisolenia tortuosaeformis belongs to Multisolenia' according to Klaamann 1962
- 'Palaeofavosites aaloei belongs to Palaeofavosites' according to Klaamann 1959
- 'Palaeofavosites abstrusus belongs to Palaeofavosites' according to Klaamann 1961
- 'Palaeofavosites aliquantulus belongs to Palaeofavosites' according to Klaamann 1962
- 'Palaeofavosites alveolaris belongs to Palaeofavosites' according to Goldfuss 1829
- 'Palaeofavosites arcticus belongs to Palaeofavosites' according to Poulsen 1941
- 'Palaeofavosites balticus belongs to Palaeofavosites' according to Rukhin 1937
- 'Palaeofavosites borealis belongs to Palaeofavosites' according to Tchernychev 1937
- 'Palaeofavosites collatatus belongs to Palaeofavosites' according to Klaamann 1961
- 'Palaeofavosites corrugatus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites dagoensis belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites estonus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites felix belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites forbesiformis belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites forbesiformis porosus belongs to Palaeofavosites forbesiformis' according to Sokolov 1952
- 'Palaeofavosites globosus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites gramineus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites haapsaluensis belongs to Palaeofavosites' according to Klaamann 1961
- 'Palaeofavosites hirtus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites hystrix belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites ignotus belongs to Palaeofavosites' according to Klaamann 1959
- 'Palaeofavosites jaaniensis belongs to Palaeofavosites' according to Sokolov 1952
- 'Palaeofavosites juuru belongs to Palaeofavosites' according to Klaamann 1959
- 'Palaeofavosites karinuensis belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites legibilis belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites limbergensis belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites luhai belongs to Palaeofavosites' according to Sokolov 1952
- 'Palaeofavosites luxuriosus belongs to Palaeofavosites' according to Klaamann 1962
- 'Palaeofavosites mirus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites mullochensis belongs to Palaeofavosites' according to Nicholson and Etheridge 1878
- 'Palaeofavosites mysticus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites oelaensis belongs to Palaeofavosites' according to Klaamann 1959
- 'Palaeofavosites optatus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites parilis belongs to Palaeofavosites' according to Klaamann 1961
- 'Palaeofavosites pauculus belongs to Palaeofavosites' according to Klaamann 1961
- 'Palaeofavosites paulus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites porkuniensis belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites porosus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites poulseni belongs to Palaeofavosites' according to Teichert 1937
- 'Palaeofavosites primus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites raikuelaensis belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites rudis belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites rugosus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites saaremicus belongs to Palaeofavosites' according to Sokolov 1952
- 'Palaeofavosites schmidti belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavosites septosus belongs to Palaeofavosites' according to Sokolov 1952
- 'Palaeofavosites suurikuensis belongs to Palaeofavosites' according to Klaamann 1961
- 'Palaeofavosites tenuis belongs to Palaeofavosites' according to Sokolov 1952
- 'Palaeofavosites tersus belongs to Palaeofavosites' according to Klaamann 1961
- 'Palaeofavosites vetustus belongs to Palaeofavosites' according to Klaamann 1961
- 'Palaeofavosites vexatus belongs to Palaeofavosites' according to Sokolov 1951
- 'Palaeofavositinae belongs to Favositidae'
- 'Paleofavosites is corrected as Palaeofavosites and belongs to Palaeofavositinae'
- 'Parastriatopora belongs to Thamnoporidae'
- 'Parastriatopora celebrata belongs to Parastriatopora' according to Klaamann 1962
- 'Parastriatopora mirifica belongs to Parastriatopora' according to Klaamann 1962
- 'Parastriatopora rhizoides belongs to Parastriatopora' according to Sokolov 1949
- 'Placocoenites belongs to Coenitinae'
- 'Placocoenites pellicula belongs to Placocoenites'
- 'Priscosolenia belongs to Palaeofavositinae'
- 'Priscosolenia perarmata belongs to Priscosolenia' according to Klaamann 1962
- 'Roemeria kunthiana is recombined as Syringolites kunthianus' according to Lindström 1896
- 'Roemeria kunthiana is recombined as Syringolites kunthianus'
- 'Romingerella belongs to Theciidae'
- 'Romingerella estonica belongs to Romingerella' according to Sokolov 1955
- 'Subalveolitella belongs to Alveolitidae'
- 'Subalveolitella majuscula belongs to Subalveolitella' according to Klaamann 1962
- 'Subalveolitella minuscula belongs to Subalveolitella' according to Klaamann 1962
- 'Subalveolitella repentina belongs to Subalveolitella' according to Sokolov 1955
- 'Subalveolites belongs to Alveolitidae'
- 'Subalveolites callosus belongs to Subalveolites'
- 'Subalveolites eichwaldi belongs to Subalveolites' according to Sokolov 1955
- 'Subalveolites panderi belongs to Subalveolites' according to Sokolov 1955
- 'Subalveolites sokolovi belongs to Subalveolites' according to Klaamann 1961
- 'Syringolites belongs to Syringolitidae'
- 'Syringolites huronensis belongs to Syringolites' according to Hinde 1879
- 'Syringolitidae belongs to Favositina'
- 'Tabulata belongs to Anthozoa'
- 'Thamnoporidae belongs to Thamnoporina'
- 'Thamnoporina belongs to Favositida'
- 'Thecia belongs to Theciidae'
- 'Thecia (Angopora) was reranked as Angopora and belongs to Theciidae'
- 'Thecia confluens belongs to Thecia' according to Eichwald 1854
- 'Thecia major is recombined as Romingerella major'
- 'Thecia saaremica belongs to Thecia' according to Klaamann 1961
- 'Thecia swinderniana belongs to Thecia' according to Goldfuss 1829
- 'Theciidae belongs to Favositina'