Opinions from R. H. Benson et al. 1961
- 'Abditoloculina belongs to Hollinidae'
- 'Abursus belongs to Podocopida'
- 'Acanthocythere belongs to Progonocytherinae'
- 'Acantonodella belongs to Drepanellidae'
- 'Acronotella belongs to Acronotellidae'
- 'Acrossula belongs to Ostracoda'
- 'Acuticythereis belongs to Leguminocythereidae'
- 'Adelphobolbina belongs to Hollinidae'
- 'Aechmina belongs to Aechminidae' according to Jones and Holl 1869
- 'Aechmina belongs to Aechminidae'
- 'Aechminaria belongs to Aechminidae'
- 'Aechminella belongs to Aechminellidae'
- 'Aechminellidae belongs to Drepanellacea'
- 'Aechmininae was reranked as the family Aechminidae and belongs to Drepanellacea'
- 'Alanellidae is a subjective synonym of Beecherellidae'
- 'Alatacythere belongs to Brachycytheridae'
- 'Altha belongs to Podocopida'
- 'Aluta belongs to Beyrichonidae'
- 'Ambocythere belongs to Trachyleberididae'
- 'Amphicythere belongs to Brachycytheridae'
- 'Amphicytherura belongs to Schizocytheridae'
- 'Amphissella belongs to Placideidae'
- 'Amphissites belongs to Amphissitidae'
- 'Amphissitinae was reranked as the family Amphissitidae and belongs to Kirkbyacea'
- 'Amphizona belongs to Arcyzonidae'
- 'Amygdalella belongs to Leiocyaminae'
- 'Anisochilina belongs to Leperditiidae'
- 'Ankumia belongs to Podocopida'
- 'Anomocytheridea belongs to Cytherideinae'
- 'Antibythocypris belongs to Bairdiidae'
- 'Anticythereis belongs to Trachyleberididae'
- 'Aparchitellina belongs to Leperditellidae' according to Polenova 1955
- 'Aparchitidae belongs to Oepikellacea'
- 'Aparchitocythere belongs to Neocytherideidinae'
- 'Apatobolbina belongs to Beyrichiidae'
- 'Apatochilina belongs to Eurychilinidae'
- 'Apatocythere belongs to Brachycytheridae'
- 'Aphelocythere belongs to Protocytherinae'
- 'Arcacythere belongs to Pectocytheridae'
- 'Archaeocopida belongs to Ostracoda' according to Sylvester-Bradley 1899
- 'Archaeocopida belongs to Ostracoda'
- 'Archeocuneocythere belongs to Cuneocytherinae'
- 'Archiconchoecia belongs to Halocyprididae'
- 'Archicythereis belongs to Trachyleberididae'
- 'Arcyzona belongs to Arcyzonidae'
- 'Arcyzonidae belongs to Kirkbyacea'
- 'Aristozoe belongs to Isochilinidae'
- 'Artifactella belongs to Podocopida'
- 'Asteropteron belongs to Cylindroleberididae'
- 'Atjehella belongs to Cytheracea'
- 'Aulacopsis belongs to Sigmoopsidae'
- 'Aulocytheridea belongs to Neocytherideidinae'
- 'Aurikirkbya belongs to Kirkbyidae'
- 'Aversovalva is a subjective synonym of Cytheropteron' according to Mandelstam 1960
- 'Azygocypridina belongs to Cypridinidae'
- 'Bairdites belongs to Bairdiocyprididae'
- 'Bakunella belongs to Pontocyprididae'
- 'Balantoides is a subjective synonym of Aechminella'
- 'Barychilina belongs to Barychilinidae'
- 'Bassleratia belongs to Bassleratiidae'
- 'Bassleratiidae belongs to Hollinacea'
- 'Basslerites belongs to Leguminocythereidae'
- 'Beecherella belongs to Beecherellidae'
- 'Bekena belongs to Bairdiocyprididae'
- 'Bellornatia belongs to Bassleratiidae'
- 'Berounella belongs to Berounellidae'
- 'Bertillonella belongs to Entomozoinae'
- 'Beyrichia belongs to Beyrichiidae'
- 'Beyrichia (Gibba) belongs to Beyrichia' according to Fuchs 1920
- 'Beyrichia (Gibba) spinosa belongs to Beyrichia (Gibba)' according to Fuchs 1920
- 'Gibba spinosa is a subjective synonym of Paraechmina spinosa'
- 'Beyrichiacea belongs to Beyrichicopina'
- 'Beyrichiana belongs to Aechminellidae'
- 'Beyrichicopina belongs to Palaeocopida'
- 'Beyrichiella belongs to Beyrichiopsidae'
- 'Beyrichiidae belongs to Beyrichiacea'
- 'Beyrichiopsis belongs to Beyrichiopsidae'
- 'Beyrichona belongs to Beyrichonidae'
- 'Beyrichonidae belongs to Archaeocopida'
- 'Bichilina belongs to Bolliidae'
- 'Bicornella belongs to Aechminellidae'
- 'Bicornellina belongs to Eurychilinidae'
- 'Bideirella belongs to Scrobiculidae'
- 'Binodella is a subjective synonym of Amphissites'
- 'Birdsallella belongs to Cavellinidae'
- 'Bisacculus belongs to Hollinidae'
- 'Bisulcocypris belongs to Limnocytheridae'
- 'Bolbibollia belongs to Beyrichiidae'
- 'Bolbina belongs to Piretellidae'
- 'Bolbineossia belongs to Beyrichiidae'
- 'Bolbiprimitia belongs to Beyrichiidae'
- 'Bolbozoe belongs to Bolbozoidae'
- 'Bolbozoidae belongs to Entomozoacea'
- 'Boldella belongs to Paradoxostomatinae'
- 'Bollia belongs to Bolliidae'
- 'Bolliidae belongs to Drepanellacea'
- 'Bonnemaia belongs to Zygobolbidae'
- 'Bonneprimites belongs to Leperditellidae'
- 'Bosquetia belongs to Podocopida'
- 'Bosquetina belongs to Brachycytheridae'
- 'Boucia belongs to Bouciinae'
- 'Bouciinae belongs to Entomozoidae'
- 'Brachycytheropteron belongs to Ostracoda'
- 'Bradoria belongs to Bradoriidae'
- 'Bradoriidae belongs to Archaeocopida'
- 'Brevibolbina belongs to Sigmoopsidae'
- 'Briartina belongs to Leperditiidae'
- 'Bromidella belongs to Piretellidae'
- 'Bronsteiniana belongs to Cytheracea'
- 'Budnianella belongs to Kirkbyidae' according to Boucek 1936
- 'Bufina belongs to Bufinidae'
- 'Bufinidae belongs to Quasillitacea'
- 'Buregia belongs to Buregiidae'
- 'Buregiidae belongs to Ostracoda'
- 'Bursulella is an invalid subgroup of Ostracoda'
- 'Bythocyproidea belongs to Bufinidae'
- 'Bythocytheridae belongs to Cytheracea'
- 'Callistocythere belongs to Leptocytheridae'
- 'Cambria belongs to Hipponicharionidae'
- 'Camdenidea belongs to Cypridacea'
- 'Camptocythere belongs to Cytheridae'
- 'Campylocythere belongs to Leguminocythereidae'
- 'Carbonita belongs to Cypridacea'
- 'Cardiniferella belongs to Cardiniferellidae'
- 'Cardiniferellidae belongs to Kirkbyacea'
- 'Carinobolbina belongs to Sigmoopsidae'
- 'Carinocythereis belongs to Trachyleberididae'
- 'Cativella belongs to Trachyleberididae'
- 'Celechovites belongs to Bairdiidae' according to Polenova and Zanina 1960
- 'Ceratocypris belongs to Graviidae' according to Polenova 1960
- 'Ceratopsis belongs to Quadrijugatoridae'
- 'Cetacella belongs to Cyclocyprididae'
- 'Chapmanites belongs to Cavellinidae'
- 'Checontonomus belongs to Oncotechmoninae'
- 'Chesterella is a subjective synonym of Knoxina'
- 'Chevroleperditia belongs to Herrmannininae'
- 'Chilobolbina belongs to Chilobolbinidae'
- 'Chilobolbinidae belongs to Hollinacea'
- 'Chironiptrum belongs to Arcyzonidae'
- 'Clavofabella belongs to Primitiopsinae'
- 'Climacoidea belongs to Cytheracea'
- 'Clithrocytheridea belongs to Cytherideinae'
- 'Cnestocythere belongs to Cytheridae'
- 'Codonocera belongs to Cypridinidae'
- 'Coelochilina belongs to Eurychilinidae'
- 'Conchoecia belongs to Halocyprididae'
- 'Conchoprimites belongs to Leperditellidae'
- 'Cooperatia belongs to Krausellidae'
- 'Cornigella belongs to Aechminellidae'
- 'Cornikloedenia belongs to Beyrichiidae'
- 'Coronakirkbya belongs to Kirkbyidae'
- 'Coryellites belongs to Bairdiocyprididae'
- 'Costatia belongs to Quasillitidae'
- 'Craterellina is a subjective synonym of Thlipsura'
- 'Crescentilla belongs to Richinidae'
- 'Ctenobolbina belongs to Hollinidae'
- 'Ctenobolbinella belongs to Beyrichiidae'
- 'Ctenoloculina belongs to Hollinidae'
- 'Ctenonotella belongs to Palaeocopida'
- 'Cuneocythere belongs to Cuneocytherinae'
- 'Cuselina is a nomen nudum'
- 'Cuselina impressa is a nomen nudum'
- 'Cushmanidea belongs to Neocytherideidinae'
- 'Cyamocytheridea belongs to Cytherideinae'
- 'Cyclasterope belongs to Cylindroleberididae'
- 'Cyclasterope (Cyclasterope) belongs to Cyclasterope' according to Brady 1897
- 'Cyclasterope (Cyclasterope) belongs to Cyclasterope'
- 'Cyclasterope (Cycloleberis) belongs to Cyclasterope' according to Skogsberg 1920
- 'Cyclasterope (Cycloleberis) belongs to Cyclasterope'
- 'Cyclindroleberididae belongs to Cypridinacea'
- 'Cyclocypria belongs to Cyclocyprididae'
- 'Cyclocyprididae belongs to Cypridacea'
- 'Cyclocypris belongs to Cyclocyprididae'
- 'Cylindroleberididae belongs to Cypridinacea'
- 'Cylindroleberis belongs to Cylindroleberididae'
- 'Cyprella belongs to Cyprellidae'
- 'Cyprellidae belongs to Cypridinacea'
- 'Cypria belongs to Cyclocyprididae'
- 'Cypridea (Pseudocypridina) belongs to Cypridea' according to Roth 1933
- 'Cypridella belongs to Cypridinellidae'
- 'Cypridellina belongs to Cypridinellidae'
- 'Cypridina belongs to Cypridinidae'
- 'Cypridinacea belongs to Myodocopina'
- 'Cypridinella belongs to Cypridinellidae'
- 'Cypridinellidae belongs to Cypridinacea'
- 'Cypridinidae belongs to Cypridinacea'
- 'Cypridininae belongs to Cypridinidae'
- 'Cyprosina belongs to Cyprosinidae'
- 'Cyprosinidae belongs to Entomoconchacea'
- 'Cyprosis belongs to Cypridinacea'
- 'Cyrtocyprus belongs to Bairdiocyprididae'
- 'Cystomatochilina belongs to Chilobolbinidae'
- 'Cytheralison belongs to Cytheracea'
- 'Cytherella bispinulatus belongs to Cytherella' according to Stewart 1927
- 'Cytherella bispinulatus is a subjective synonym of Ponderodictya punctulifera'
- 'Cytherellidae belongs to Platycopina'
- 'Cytheretta belongs to Cytherettidae'
- 'Cytheridea belongs to Cytherideinae'
- 'Cytherideinae belongs to Cytherideidae'
- 'Cytherideis is a subjective synonym of Cushmanidea'
- 'Cytheridella belongs to Limnocytheridae'
- 'Cytherina spinosa belongs to Cytherina' according to Hall 1852
- 'Cytherina spinosa is recombined as Paraechmina spinosa'
- 'Cytherois belongs to Paradoxostomatinae'
- 'Cytheroma belongs to Cytheromatinae'
- 'Cytheromatinae belongs to Paradoxostomatidae'
- 'Cytheropsis is a subjective synonym of Pontocypris'
- 'Cytheropterina is a subjective synonym of Orthonotacythere'
- 'Cytherura belongs to Cytheruridae'
- 'Deloia belongs to Glyptopleuridae' according to Egorov 1950
- 'Dibolbina belongs to Beyrichiidae'
- 'Dielymella belongs to Indianidae'
- 'Digmocythere belongs to Brachycytheridae'
- 'Dihogmochilina belongs to Isochilinidae'
- 'Dilobella belongs to Tetradellidae'
- 'Diogmopteron belongs to Brachycytheridae'
- 'Disopontocypridinae belongs to Cyprididae'
- 'Disopontocypris belongs to Disopontocypridinae'
- 'Distobolbina belongs to Sigmoopsidae'
- 'Disulcina belongs to Sigmoopsidae'
- 'Dizygopleura belongs to Kloedenellidae'
- 'Dolichoscapha belongs to Beyrichiidae'
- 'Donellina belongs to Kloedenellidae' according to Egorov 1950
- 'Doraclatum belongs to Placideidae'
- 'Dordoniella belongs to Brachycytheridae'
- 'Drepanellacea belongs to Beyrichicopina'
- 'Drepanellidae belongs to Drepanellacea'
- 'Drepanellina belongs to Beyrichiidae'
- 'Echinoprimitia belongs to Hollinacea'
- 'Editia belongs to Palaeocopida'
- 'Ellesmerina belongs to Podocopida'
- 'Ellipsella is a subjective synonym of Oliganisus'
- 'Elofsonella belongs to Hemicytheridae'
- 'Elofsonia belongs to Loxoconchidae'
- 'Elpezoe belongs to Entomoconchinae'
- 'Elpinella belongs to Entomoconchidae'
- 'Elpinella belongs to Bairdiidae' according to Polenova and Zanina 1960
- 'Emphasia belongs to Cytheracea'
- 'Endolophia belongs to Barychilinidae'
- 'Entomis is a subjective synonym of Entomozoe' according to Polenova and Zanina 1960
- 'Entomoconchacea belongs to Myodocopina'
- 'Entomoconchidae belongs to Entomoconchacea'
- 'Entomoconchinae belongs to Entomoconchidae'
- 'Entomoconchus belongs to Entomoconchinae'
- 'Entomoprimitia belongs to Entomozoinae'
- 'Entomozoacea belongs to Myodocopina'
- 'Entomozoe belongs to Entomozoinae'
- 'Entomozoidae belongs to Entomozoacea'
- 'Entomozoinae belongs to Entomozoidae'
- 'Entoprimitia belongs to Entomozoinae' according to Polenova and Zanina 1960
- 'Eoconchoecia belongs to Acronotellidae'
- 'Eocytherella is a nomen nudum'
- 'Eohollina belongs to Hollinidae'
- 'Eoleperditia belongs to Leperditiidae'
- 'Eremos belongs to Beyrichonidae'
- 'Eriella belongs to Quasillitidae'
- 'Euconchoecia belongs to Halocyprididae'
- 'Eucraterellina belongs to Thlipsuridae'
- 'Euglyphella belongs to Quasillitidae'
- 'Eukloedenella belongs to Kloedenellidae'
- 'Euprimites belongs to Eurychilinidae'
- 'Euprimitia belongs to Eurychilinidae'
- 'Eurychilina belongs to Eurychilinidae'
- 'Eurychilinidae belongs to Hollinacea'
- 'Euryitycythere belongs to Eucytherinae'
- 'Eustephanella belongs to Thlipsuridae'
- 'Evlanella belongs to Lichviniidae'
- 'Evlanovia belongs to Aechminellidae'
- 'Exophthalmocythere belongs to Cytheracea'
- 'Falsipollex belongs to Hollinidae'
- 'Falunia belongs to Cytheracea'
- 'Famenella belongs to Bairdiidae' according to Polenova and Zanina 1960
- 'Favella is a subjective synonym of Puriana'
- 'Favulella belongs to Thlipsuridae'
- 'Fidelitella belongs to Tetradellidae' according to Ivanova 1960
- 'Fissocythere belongs to Trachyleberidinae' according to Malz 1959
- 'Flaccivelum belongs to Hollinidae'
- 'Flexus belongs to Cytherettidae'
- 'Foramenella belongs to Tetradellidae'
- 'Fossirichterina belongs to Richterininae'
- 'Franklinella belongs to Entomozoinae' according to Polenova and Zanina 1960
- 'Galliaecytheridea belongs to Cytherideinae'
- 'Geffenina belongs to Beyrichiopsidae'
- 'Geffenites is a nomen dubium'
- 'Geisina belongs to Geisinidae'
- 'Geisinidae belongs to Kloedenellacea'
- 'Gesoriacula belongs to Cytheridae' according to Oertli 1959
- 'Gibba is a subjective synonym of Paraechmina'
- 'Gibberella belongs to Leperditiidae'
- 'Gigantocypris belongs to Cypridinidae'
- 'Gillatia belongs to Beyrichiacea'
- 'Ginella belongs to Aparchitidae' according to Polenova 1960
- 'Gipsella belongs to Mennerellidae' according to Polenova 1960
- 'Glossomorphites belongs to Sigmoopsidae'
- 'Glymmatobolbina belongs to Zygobolbidae'
- 'Glyptopleuroides belongs to Youngiellidae'
- 'Golcondella is a nomen dubium'
- 'Grammolomatella belongs to Hollinidae'
- 'Gravia belongs to Graviidae' according to Polenova 1952
- 'Graviidae belongs to Aparchitacea' according to Polenova 1952
- 'Gubkiniella belongs to Progonocytherinae'
- 'Habrocythere belongs to Cytheracea'
- 'Halliella belongs to Beyrichiidae'
- 'Halocypridacea belongs to Myodocopina'
- 'Halocyprididae belongs to Halocypridacea'
- 'Halocypris belongs to Halocyprididae'
- 'Hamiltonella is a subjective synonym of Ponderodictya'
- 'Hanaites belongs to Hollinidae'
- 'Haplobolbina belongs to Palaeocopida'
- 'Haplocytheridea belongs to Cytherideinae'
- 'Haploprimitia belongs to Leperditellidae'
- 'Hastacypris belongs to Bairdiacea'
- 'Healdiacypris belongs to Podocopida'
- 'Healdioides belongs to Healdiidae'
- 'Hemiaechminoides belongs to Ostracoda'
- 'Hemicythere belongs to Hemicytheridae'
- 'Hemicytheria belongs to Hemicytheridae'
- 'Hemikrithe belongs to Cytheracea'
- 'Hermannina belongs to Leperditiidae'
- 'Herrmannina belongs to Herrmannininae'
- 'Herrmannininae belongs to Leperditiidae'
- 'Hesperidella belongs to Piretellidae'
- 'Hesslandella belongs to Quadrijugatoridae'
- 'Heterochilina belongs to Leperditiidae'
- 'Heterocyprideis belongs to Cytherideinae'
- 'Heterocypris belongs to Cypridinae'
- 'Heterocythereis belongs to Hemicytheridae'
- 'Heterodesmus belongs to Cypridinidae'
- 'Hibbardia belongs to Beyrichiidae'
- 'Hipponicharion belongs to Hipponicharionidae'
- 'Hipponicharionidae belongs to Archaeocopida'
- 'Hirsutocythere belongs to Trachyleberididae'
- 'Hogmochilina is a subjective synonym of Isochilina'
- 'Hollina belongs to Hollinidae'
- 'Hollinacea belongs to Beyrichicopina'
- 'Hollinella belongs to Hollinidae'
- 'Hollinidae belongs to Hollinacea'
- 'Holtedahlites belongs to Isochilinidae'
- 'Howeina belongs to Cytheruridae'
- 'Hulingsina belongs to Neocytherideidinae'
- 'Hutsonia belongs to Protocytherinae'
- 'Hyolithidae belongs to Hyolithina'
- 'Hyphasmaphora belongs to Thlipsuridae'
- 'Hypotetragona belongs to Geisinidae'
- 'Idiocythere belongs to Trachyleberididae'
- 'Incisurella belongs to Healdiidae'
- 'Incongruellina belongs to Brachycytherinae' according to Ruggieri 1958
- 'Indiana belongs to Indianidae'
- 'Indianidae belongs to Archaeocopida'
- 'Iniella belongs to Tomiellidae'
- 'Isochilininae was reranked as the family Isochilinidae and belongs to Leperditicopida'
- 'Isocythereis belongs to Trachyleberididae'
- 'Ivaria belongs to Ostracoda'
- 'Janischewskya is corrected as Jamischjewskya and belongs to Hollinidae'
- 'Janusella belongs to Krausellidae'
- 'Javanella belongs to Cytherettinae' according to Mandelstam 1960
- 'Jonesites belongs to Bolliidae'
- 'Juvenix belongs to Cytheracea'
- 'Kalugia belongs to Lichviniidae'
- 'Kangarina belongs to Cytheruridae'
- 'Karlsteinella belongs to Palaeocopida'
- 'Kassinina belongs to Cypridinae'
- 'Kegelites belongs to Amphissitidae'
- 'Kellettina belongs to Kellettinidae'
- 'Kellettininae was reranked as the family Kellettinidae and belongs to Kirkbyacea'
- 'Kemeroviana belongs to Tomiellidae'
- 'Kiesowia belongs to Quadrijugatoridae'
- 'Kikliocythere belongs to Brachycytheridae'
- 'Kinnekullea belongs to Drepanellidae'
- 'Kirkbya belongs to Kirkbyidae'
- 'Kirkbyacea belongs to Beyrichicopina'
- 'Kirkbyellina belongs to Berounellidae'
- 'Kirkbyidae belongs to Kirkbyacea'
- 'Klieana belongs to Protocytherinae'
- 'Kloedenella belongs to Kloedenellidae'
- 'Kloedenellacea belongs to Kloedenellocopina'
- 'Kloedenellitina belongs to Beyrichiopsidae'
- 'Kloedenia belongs to Beyrichiidae'
- 'Knightina belongs to Kirkbyidae'
- 'Knoxidae is a subjective synonym of Beyrichiopsidae'
- 'Knoxina belongs to Beyrichiopsidae'
- 'Knoxites belongs to Geisinidae'
- 'Kobayashiina belongs to Cytheruridae'
- 'Kozlowskiella belongs to Palaeocopida'
- 'Krausella belongs to Krausellidae'
- 'Krithinae belongs to Cytherideidae'
- 'Kyamodes belongs to Beyrichiidae'
- 'Laccochilina belongs to Eurychilinidae'
- 'Laccoprimitia belongs to Eurychilinidae'
- 'Langtonia was reranked as Cypridea (Langtonia) and belongs to Cypridea'
- 'Leguminocythereidae belongs to Cytheracea'
- 'Leguminocythereis belongs to Leguminocythereidae'
- 'Leiocyaminae belongs to Primitiopsidae'
- 'Leiocyamus belongs to Leiocyaminae'
- 'Leniocythere belongs to Trachyleberididae'
- 'Lennukella belongs to Bassleratiidae'
- 'Leperditella belongs to Leperditellidae'
- 'Leperditellidae belongs to Leperditellacea'
- 'Leperditia belongs to Leperditiidae'
- 'Leperditia (Isochilina) was reranked as Isochilina and belongs to Isochilinidae'
- 'Leperditia punctulifera belongs to Leperditia' according to Hall 1860
- 'Leperditia punctulifera is recombined as Hamiltonella punctulifera' according to Stewart 1936
- 'Leperditia punctulifera is recombined as Ponderodictya punctulifera' according to Coryell and Malkin 1936
- 'Leperditicopida belongs to Ostracoda'
- 'Leperditiidae belongs to Leperditicopida'
- 'Leptocythere belongs to Leptocytheridae'
- 'Leptoprimitia belongs to Leperditellidae' according to Kummerow 1953
- 'Levisulculus belongs to Tvaerenellidae'
- 'Lichvinia belongs to Lichviniidae'
- 'Lichviniidae belongs to Kloedenellacea'
- 'Limbinaria belongs to Primitiopsinae'
- 'Lindsayella belongs to Aechminidae'
- 'Loculicytheretta belongs to Cytherettidae'
- 'Lokius is a subjective synonym of Beyrichiopsis'
- 'Lomatobolbina belongs to Sigmoopsidae'
- 'Looneyella belongs to Protocytherinae'
- 'Lophocythere belongs to Progonocytherinae'
- 'Lophodentina belongs to Cytherinae' according to Apostloescu 1959
- 'Lophokloedenia belongs to Beyrichiidae'
- 'Loxoconchella belongs to Loxoconchidae'
- 'Loxocythere belongs to Cytheridae'
- 'Luvula is a subjective synonym of Jonesia'
- 'Lycopterocypris belongs to Cypridinae'
- 'Macroconchoecia belongs to Halocyprididae'
- 'Macrocypridina belongs to Cypridinidae'
- 'Macrodentina belongs to Brachycytheridae'
- 'Mammoides is a subjective synonym of Beyrichiana'
- 'Mandelstamia belongs to Cytheracea'
- 'Maratia belongs to Bolliidae'
- 'Marginia is a subjective synonym of Tambovia'
- 'Marslatourella belongs to Cytheracea'
- 'Mastigobolbina belongs to Zygobolbidae'
- 'Maternella belongs to Richterininae'
- 'Mauryella belongs to Aechminellidae'
- 'Mediocytherideis belongs to Cytheracea'
- 'Mehesella belongs to Cytheruridae'
- 'Mennerella belongs to Beyrichiopsidae'
- 'Mennerellidae is a subjective synonym of Beyrichiopsidae'
- 'Menoeidina belongs to Cavellinidae'
- 'Merocythere belongs to Protocytherinae'
- 'Mesomphalus belongs to Beyrichiidae'
- 'Microcythere belongs to Microcytherinae'
- 'Microcytherinae belongs to Paradoxostomatidae'
- 'Milanovskya belongs to Aechminellidae'
- 'Miltonella belongs to Miltonellidae'
- 'Miltonellidae belongs to Kloedenellacea'
- 'Miracythere belongs to Bythocytheridae'
- 'Mirochilina belongs to Pribylitidae'
- 'Moelleritia belongs to Leperditiidae'
- 'Mononotella belongs to Indianidae'
- 'Monopia belongs to Cypridinidae'
- 'Monsmirabilia belongs to Cuneocytherinae'
- 'Moorea belongs to Ostracoda'
- 'Moorites belongs to Youngiellidae'
- 'Murrayina belongs to Trachyleberididae'
- 'Mutilus belongs to Hemicytheridae'
- 'Myodocopida belongs to Ostracoda'
- 'Myodocopina belongs to Myodocopida'
- 'Myomphalus belongs to Beyrichiidae'
- 'Nanopsis belongs to Palaeocopida'
- 'Naviculina belongs to Cytheracea'
- 'Nehdentomis belongs to Entomozoinae'
- 'Neoaparchites belongs to Aparchitidae'
- 'Neobeyrichia is a subjective synonym of Beyrichia'
- 'Neocyprideis belongs to Cytherideinae'
- 'Neocytherideidinae belongs to Cytherideidae'
- 'Neodrepanella belongs to Drepanellidae'
- 'Neokloedenella is a subjective synonym of Oliganisus'
- 'Neomonoceratina belongs to Schizocytheridae'
- 'Netrocytheridea belongs to Cytherideinae'
- 'Nodella belongs to Drepanellidae'
- 'Nodibeyrichia is a subjective synonym of Beyrichia'
- 'Nodophthalmocythere belongs to Cytherideinae'
- 'Normanicythere belongs to Trachyleberididae'
- 'Novakina belongs to Aechmininae' according to Boucek 1936
- 'Octonaria belongs to Thlipsuridae'
- 'Oecematobolbina belongs to Sigmoopsidae'
- 'Oepikellacea belongs to Beyrichicopina'
- 'Oepikellidae belongs to Oepikellacea'
- 'Oepikium belongs to Piretellidae'
- 'Ogmoopsis belongs to Sigmoopsidae'
- 'Oligocythereis belongs to Trachyleberididae'
- 'Oncotechmoninae belongs to Entomoconchidae'
- 'Oncotechmonus belongs to Oncotechmoninae'
- 'Opisthoplax belongs to Primitiidae' according to Kummerow 1943
- 'Ordovicia belongs to Sigmoopsidae'
- 'Orionina belongs to Trachyleberididae'
- 'Otocythere belongs to Cytheruridae'
- 'Ovocytheridea belongs to Cytherideinae'
- 'Pachydomella belongs to Pachydomellidae'
- 'Pachydomellidae belongs to Healdiacea'
- 'Paegnium belongs to Arcyzonidae'
- 'Paenaequina is a subjective synonym of Isochilina'
- 'Paenula belongs to Cytheracea'
- 'Paijenborchellina belongs to Schizocytheridae'
- 'Palaeocopida belongs to Ostracoda'
- 'Palaeocytheridea belongs to Cytheracea'
- 'Palaeocytheridella belongs to Cytherideinae'
- 'Palaeophilomedes belongs to Rhombinidae'
- 'Paleomonsmirabilia belongs to Cuneocytherinae'
- 'Palmenella belongs to Schizocytheridae'
- 'Parabolbina belongs to Hollinidae'
- 'Paracavellina belongs to Cavellinidae'
- 'Paracyprideis belongs to Neocytherideidinae'
- 'Paracyprididae belongs to Cypridacea'
- 'Paracyprinotus belongs to Cypridinae'
- 'Paracythere belongs to Paradoxostomatinae'
- 'Paracythereis belongs to Limnocytheridae'
- 'Paracytheretta belongs to Cytherettidae'
- 'Paracytherois belongs to Paradoxostomatinae'
- 'Paracytheroma belongs to Paradoxostomatinae'
- 'Paracytheropteron belongs to Cytheruridae'
- 'Paraechmina belongs to Aechminidae'
- 'Paraeucypris belongs to Cypridinae'
- 'Parahealdia belongs to Leperditellidae'
- 'Parakrithella belongs to Krithinae'
- 'Parapribylites is a subjective synonym of Pribylites'
- 'Parariscus belongs to Cytherurinae' according to Oertli 1959
- 'Paraschuleridea belongs to Protocytherinae'
- 'Parataxodonta belongs to Protocytherinae'
- 'Parenthatia belongs to Bolliidae'
- 'Parulrichia belongs to Richinidae'
- 'Pavloviella belongs to Cytheracea'
- 'Pectocythere belongs to Pectocytheridae'
- 'Pellucistoma belongs to Cytheromatinae'
- 'Perprimitia is a subjective synonym of Geisina'
- 'Phanassymetria belongs to Pachydomellidae'
- 'Philomedes belongs to Philomedinae'
- 'Philomedinae belongs to Cypridinidae'
- 'Phlyctenophora belongs to Paracyprididae'
- 'Phlyctiscapha belongs to Beyrichiidae'
- 'Phlyctocythere belongs to Loxoconchidae'
- 'Phreatura belongs to Healdiidae'
- 'Physocypria belongs to Cyclocyprididae'
- 'Pichottia belongs to Cytherideinae' according to Oertli 1959
- 'Piretella belongs to Piretellidae'
- 'Piretellidae belongs to Hollinacea'
- 'Piretia belongs to Piretellidae'
- 'Piretopsis belongs to Palaeocopida'
- 'Placidea belongs to Placideidae'
- 'Placideidae belongs to Kirkbyacea'
- 'Platella belongs to Cytherellidae'
- 'Platybolbina belongs to Eurychilinidae'
- 'Platychilella belongs to Cavellinidae'
- 'Platycopina belongs to Podocopida'
- 'Platycythere belongs to Cytheracea'
- 'Platycythereis belongs to Trachyleberididae'
- 'Platylophocythere belongs to Cytherinae' according to Oertli 1959
- 'Plavskella belongs to Knoxidae' according to Polenova 1960
- 'Pleoschisma belongs to Philomedinae'
- 'Plethobolbina belongs to Zygobolbidae'
- 'Pleurocythere belongs to Protocytherinae'
- 'Podocopida belongs to Ostracoda'
- 'Poloniella belongs to Kloedenellidae'
- 'Polyceratella belongs to Sigmoopsidae'
- 'Polydentina belongs to Brachycytheridae'
- 'Polyphyma belongs to Hipponicharionidae'
- 'Polytylites belongs to Amphissitidae'
- 'Polyzygia belongs to Palaeocopida'
- 'Pontocythere is a subjective synonym of Cushmanidea'
- 'Posteroprotocythere belongs to Progonocytherinae'
- 'Pribylites belongs to Pribylitidae'
- 'Pribylitidae belongs to Oepikellacea'
- 'Primitiidae is a subjective synonym of Leperditellidae'
- 'Primitiopsella belongs to Primitiopsinae'
- 'Primitiopsidae belongs to Primitiopsacea'
- 'Primitiopsinae belongs to Primitiopsidae'
- 'Primitiopsis belongs to Primitiopsinae'
- 'Procythereis belongs to Hemicytheridae'
- 'Procytherettina belongs to Progonocytherinae'
- 'Procytheridea belongs to Protocytherinae'
- 'Procytheropteron belongs to Cytheruridae'
- 'Progonocytheridae belongs to Cytheracea'
- 'Progonocytherinae belongs to Progonocytheridae'
- 'Propontocypris belongs to Pontocyprididae'
- 'Protallinnella belongs to Quadrijugatoridae'
- 'Protobuntonia belongs to Trachyleberididae'
- 'Protocytheretta belongs to Cytherettidae'
- 'Psammocytheridae belongs to Cytheracea'
- 'Pseudobeyrichia belongs to Beyrichiidae'
- 'Pseudobythocythere belongs to Bythocytheridae'
- 'Pseudocyproides belongs to Bairdiidae'
- 'Pseudocythere belongs to Bythocytheridae'
- 'Pseudocytheridea belongs to Cytherideinae'
- 'Pseudocytheromorpha belongs to Cytheracea'
- 'Pseudocytherura belongs to Cytheracea'
- 'Pseudoentomozoe belongs to Entomozoinae'
- 'Pseudokrithe belongs to Cytheracea'
- 'Pseudoleperditia belongs to Geisinidae'
- 'Pseudonodella belongs to Palaeocopida'
- 'Pseudoparaparchites belongs to Paraparchitidae'
- 'Pseudoperissocytheridea belongs to Ostracoda'
- 'Pseudophanasymmetria belongs to Bairdiacea'
- 'Pseudophilomedes belongs to Philomedinae'
- 'Pseudorakverella belongs to Quadrijugatoridae'
- 'Pseudotallinnella belongs to Sigmoopsidae'
- 'Pseudulrichia belongs to Richinidae'
- 'Pterygocythere belongs to Brachycytheridae'
- 'Pullvillites belongs to Cypridacea' according to Opik 1937
- 'Pulviella belongs to Cytheracea'
- 'Pulvillites belongs to Cypridacea' according to Opik 1937
- 'Punctomosea belongs to Bufinidae'
- 'Pyrocytheridea belongs to Eucytherinae'
- 'Pyxiprimitia belongs to Primitiidae' according to Swartz 1936
- 'Quadrijugator belongs to Quadrijugatoridae'
- 'Quadrijugatoridae belongs to Hollinacea'
- 'Quadrilobella belongs to Quadrijugatoridae'
- 'Quasibuntonia belongs to Trachyleberidinae' according to Ruggieri 1958
- 'Quasillitacea belongs to Metacopina'
- 'Rakverella belongs to Piretellidae'
- 'Ranapeltis belongs to Cypridinacea'
- 'Raymondatia belongs to Bassleratiidae'
- 'Rectocypris belongs to Cypridinae'
- 'Rectocythere belongs to Cytheracea'
- 'Rectotrachyleberis is a subjective synonym of Costa'
- 'Reginacypris belongs to Ostracoda'
- 'Reigiopsis belongs to Sigmoopsidae'
- 'Reticestus belongs to Arcyzonidae'
- 'Rhombina belongs to Rhombinidae'
- 'Rhombinidae belongs to Cypridinacea'
- 'Rhomboentomozoe belongs to Entomozoinae'
- 'Rhysomagis belongs to Alanellidae' according to Kesling et al. 1959
- 'Richina belongs to Richinidae'
- 'Richinidae belongs to Drepanellacea'
- 'Richteria belongs to Entomozoinae'
- 'Richterina belongs to Richterininae'
- 'Richterininae belongs to Entomozoidae'
- 'Rigidella belongs to Quadrijugatoridae'
- 'Robsoniella belongs to Healdiidae'
- 'Ropolonellidae belongs to Quasillitacea'
- 'Ropolonellus belongs to Ropolonellidae'
- 'Rothella belongs to Thlipsuridae'
- 'Roundyella belongs to Scrobiculidae'
- 'Rubracea belongs to Cytheracea'
- 'Rudderina belongs to Ropolonellidae'
- 'Ruptivelum belongs to Hollinidae'
- 'Russia belongs to Acronotellidae' according to Polenova 1952
- 'Rutiderma belongs to Sarsiellidae'
- 'Ruttenella belongs to Cytheracea'
- 'Saccarchites belongs to Beyrichiidae'
- 'Saffordellina belongs to Isochilinidae' according to Abushik et al. 1960
- 'Sahnia is a subjective synonym of Neocytherideis'
- 'Saida belongs to Cytheracea'
- 'Sanniolus belongs to Miltonellidae'
- 'Sansabella belongs to Sansabellidae'
- 'Sansabellidae belongs to Kloedenellacea'
- 'Sarsiella belongs to Sarsiellidae'
- 'Sarsiellidae belongs to Cypridinacea'
- 'Savagellites belongs to Miltonellidae'
- 'Scabriculocypris belongs to Cypridacea'
- 'Scalptina belongs to Quasillitidae'
- 'Schizocythere belongs to Schizocytheridae'
- 'Schizocytheridae belongs to Cytheracea'
- 'Schrenckia belongs to Leperditiidae'
- 'Schweyerina belongs to Youngiellacea'
- 'Scofieldia belongs to Drepanellidae'
- 'Scrobicula belongs to Scrobiculidae'
- 'Scrobiculidae belongs to Kirkbyacea'
- 'Segmina belongs to Cytheracea'
- 'Selebratina belongs to Graviidae' according to Polenova 1960
- 'Sellula belongs to Beyrichonidae'
- 'Semicytheridea belongs to Cytheracea'
- 'Semilukiella belongs to Mennerellidae' according to Polenova 1960
- 'Seminolites belongs to Healdiidae'
- 'Semipetasus belongs to Kellettinidae'
- 'Sibiritia belongs to Leperditiidae'
- 'Sigmobolbina belongs to Sigmoopsidae'
- 'Sigmoopsiidae is corrected as Sigmoopsidae and belongs to Hollinacea'
- 'Sigmoopsis belongs to Sigmoopsidae'
- 'Signetopsis belongs to Palaeocopida'
- 'Sigynus belongs to Aechminidae'
- 'Sinoprimitia belongs to Leperditellidae'
- 'Sinusuella belongs to Sinusuellidae'
- 'Sinusuellidae belongs to Cytheracea'
- 'Sphenicibysis belongs to Pribylitidae'
- 'Sphenocytheridea belongs to Cytherideinae'
- 'Spongicythere belongs to Trachyleberididae'
- 'Staringia was reranked as Cytherella (Staringia) and belongs to Cytherella'
- 'Steusloffia belongs to Bassleratiidae'
- 'Stibus belongs to Thlipsuridae'
- 'Stillina belongs to Cytheracea'
- 'Streptoleberis belongs to Philomedinae'
- 'Strepula belongs to Palaeocopida'
- 'Strepulites belongs to Thlipsuridae'
- 'Subligaculum belongs to Hollinidae'
- 'Subtella belongs to Hollinidae'
- 'Subulacypris belongs to Pontocyprididae'
- 'Suchonellina belongs to Cypridacea'
- 'Sulcicuneus belongs to Primitiopsinae'
- 'Sulcuna belongs to Cypridinellidae'
- 'Suriekovella belongs to Tomiellidae'
- 'Suzinia belongs to Cypridinae'
- 'Svantovites belongs to Glyptopleuridae'
- 'Svarogites belongs to Sarsiellidae'
- 'Swartzochilina belongs to Isochilinidae'
- 'Tallinnella belongs to Quadrijugatoridae'
- 'Tallinnellina belongs to Quadrijugatoridae'
- 'Tallinnopsis belongs to Quadrijugatoridae'
- 'Tambovia belongs to Beyrichiopsidae'
- 'Tanella belongs to Leptocytheridae'
- 'Taxodiella belongs to Cytheracea'
- 'Teichochilina belongs to Isochilinidae'
- 'Tenebrion is a subjective synonym of Knightina'
- 'Tetrada belongs to Quadrijugatoridae'
- 'Tetradella belongs to Tetradellidae'
- 'Tetradellidae belongs to Hollinacea'
- 'Tetragonodon belongs to Philomedinae'
- 'Tetrasacculus belongs to Hollinidae'
- 'Tetrastorthynx belongs to Bolliidae'
- 'Tetratylus belongs to Cavellinidae'
- 'Thalmannia belongs to Cytheracea'
- 'Thaumatocypridacea belongs to Myodocopina'
- 'Thaumatocyprididae belongs to Thaumatocypridacea'
- 'Thaumatocypris belongs to Thaumatocyprididae'
- 'Theriosynoecum belongs to Limnocytheridae'
- 'Thlipsura belongs to Thlipsuridae'
- 'Thlipsuracea belongs to Metacopina'
- 'Thlipsurella belongs to Thlipsuridae'
- 'Thlipsuridae belongs to Thlipsuracea'
- 'Thlipsurina belongs to Thlipsuridae'
- 'Thlipsuroides belongs to Thlipsuridae'
- 'Thlipsuropsis belongs to Thlipsuridae'
- 'Thomasatia belongs to Bassleratiidae'
- 'Thrallella belongs to Thlipsuridae'
- 'Tmemolophus belongs to Bolliidae'
- 'Tomiella belongs to Tomiellidae'
- 'Tomiellidae belongs to Cytheracea'
- 'Tomiellina belongs to Tomiellidae'
- 'Trachycythere belongs to Trachyleberididae'
- 'Trachyleberididae belongs to Cytheracea'
- 'Treposella belongs to Beyrichiidae'
- 'Tribolbina belongs to Beyrichiidae'
- 'Tricornina belongs to Primitiidae' according to Boucek 1936
- 'Triemilomatella belongs to Hollinidae'
- 'Triginglymus belongs to Leguminocythereidae'
- 'Trinota belongs to Lichviniidae'
- 'Trypetera belongs to Barychilinidae'
- 'Tsitrella belongs to Eurychilinidae'
- 'Tubulibairdia belongs to Pachydomellidae'
- 'Tvaerenella belongs to Tvaerenellidae'
- 'Tvaerenellidae belongs to Hollinacea'
- 'Uchtovia is a subjective synonym of Sargentina'
- 'Uhakiella belongs to Piretellidae'
- 'Ullerella belongs to Palaeocopida'
- 'Ulrichella belongs to Beecherellidae'
- 'Ulrichia belongs to Bolliidae'
- 'Uncertain belongs to Beyrichiacea'
- 'Ungerella belongs to Entomozoinae'
- 'Unicornites belongs to Quasillitacea'
- 'Unodentina belongs to Progonocytherinae'
- 'Urocythere belongs to Protocytherinae'
- 'Vargula belongs to Cypridinidae'
- 'Vargula (Doloria) belongs to Vargula' according to Skogsberg 1920
- 'Vargula (Doloria) belongs to Vargula'
- 'Vargula (Vargula) belongs to Vargula'
- 'Vargula (Vargula) belongs to Vargula' according to Skogsberg 1920
- 'Varicobairdia belongs to Ropolonellidae'
- 'Veenia belongs to Trachyleberididae'
- 'Velarocythere belongs to Cytheracea'
- 'Venula belongs to Barychilinidae'
- 'Vernoniella belongs to Cytherideinae'
- 'Vicinia belongs to Cytheracea'
- 'Vltavina belongs to Entomozoinae'
- 'Volganellidae is a subjective synonym of Cavellinidae'
- 'Volkina belongs to Richterininae'
- 'Voronina belongs to Cavellinidae'
- 'Walcottella belongs to Bradoriidae'
- 'Welleria belongs to Beyrichiidae'
- 'Welleriopsis belongs to Beyrichiidae'
- 'Winchellatia belongs to Sigmoopsidae'
- 'Xystinotus belongs to Bolliidae'
- 'Youngiella belongs to Youngiellidae'
- 'Youngiellacea belongs to Beyrichicopina'
- 'Youngiellidae belongs to Youngiellacea'
- 'Zaborovia belongs to Leperditellidae' according to Polenova 1952
- 'Zygobeyrichia belongs to Beyrichiidae'
- 'Zygobolba belongs to Zygobolbidae'
- 'Zygobolbidae belongs to Beyrichiacea'
- 'Zygobolbinae belongs to Zygobolbidae'
- 'Zygobolboides belongs to Quadrijugatoridae'