Abakaniella Betekhtina, 1966 † (verified source for family)
Abakaniella Betekhtina, 1966 † (current name source)
Abbottella Henderson & Bartsch, 1920 (verified source for family)
Abbottella Henderson & Bartsch, 1920 (current name source)
Abiella Khalfin, 1950 † (current name source)
Abiella Khalfin, 1950 † (habitat flag source)
Abiella Khalfin, 1950 † (verified source for family)
Abiella Khalfin, 1950 † (basis of record)
Abiella Khalfin, 1950 † (name verified source)
Abiella Khalfin, 1950 † (extant flag source)
Adamsiella Pfeiffer, 1851 (current name source)
Adamsiella Pfeiffer, 1851 (verified source for family)
Adzvaella Kanev, 1983 † (verified source for family)
Adzvaella Kanev, 1983 † (current name source)
Aguayotudora de la Torre & Bartsch, 1941 (verified source for family)
Aguayotudora de la Torre & Bartsch, 1941 (current name source)
Aguayotudora de la Torre & Bartsch, 1941 (extant flag source)
Aliena Betekhtina, 1998 † (verified source for family)
Aliena Betekhtina, 1998 † (current name source)
Ambonychiidae Miller, 1877 † (current name source)
Ambonychiidae Miller, 1877 † (taxonomy source)
Amnigeniella Betekhtina, 1966 † (current name source)
Amnigeniella Betekhtina, 1966 † (verified source for family)
Anadontellidae Silantiev, 2011 † (basis of record)
Anadontellidae Silantiev, 2011 † (taxonomy source)
Anadontellidae Silantiev, 2011 † (current name source)
Anadontellidae Silantiev, 2011 † (extant flag source)
Anadontellidae Silantiev, 2011 † (habitat flag source)
Anadontellidae Silantiev, 2011 † (name verified source)
Annularella Henderson & Bartsch, 1920 accepted as Annularisca Henderson & Bartsch, 1920 (source of synonymy)
Annularella Henderson & Bartsch, 1920 accepted as Annularisca Henderson & Bartsch, 1920 (extant flag source)
Annularella Henderson & Bartsch, 1920 accepted as Annularisca Henderson & Bartsch, 1920 (verified source for family)
Annularex de la Torre & Bartsch, 1941 accepted as Annularisca Henderson & Bartsch, 1920 (extant flag source)
Annularex de la Torre & Bartsch, 1941 accepted as Annularisca Henderson & Bartsch, 1920 (verified source for family)
Annularex de la Torre & Bartsch, 1941 accepted as Annularisca Henderson & Bartsch, 1920 (name verified source)
Annularex de la Torre & Bartsch, 1941 accepted as Annularisca Henderson & Bartsch, 1920 (source of synonymy)
Annularia Schumacher, 1817 (verified source for family)
Annularia Schumacher, 1817 (extant flag source)
Annularia Schumacher, 1817 (current name source)
Annularisca Henderson & Bartsch, 1920 (verified source for family)
Annularisca Henderson & Bartsch, 1920 (current name source)
Annularisca Henderson & Bartsch, 1920 (extant flag source)
Annularita Henderson & Bartsch, 1920 (current name source)
Annularita Henderson & Bartsch, 1920 (verified source for family)
Annularita Henderson & Bartsch, 1920 (extant flag source)
Annularodes Henderson & Bartsch, 1920 (current name source)
Annularodes Henderson & Bartsch, 1920 (extant flag source)
Annularodes Henderson & Bartsch, 1920 (verified source for family)
Annularodisca de la Torre & Bartsch, 1941 accepted as Annularodes Henderson & Bartsch, 1920 (source of synonymy)
Annularodisca de la Torre & Bartsch, 1941 accepted as Annularodes Henderson & Bartsch, 1920 (verified source for family)
Annularodisca de la Torre & Bartsch, 1941 accepted as Annularodes Henderson & Bartsch, 1920 (name verified source)
Annularodisca de la Torre & Bartsch, 1941 accepted as Annularodes Henderson & Bartsch, 1920 (extant flag source)
Annularops Henderson & Bartsch, 1920 (extant flag source)
Annularops Henderson & Bartsch, 1920 (current name source)
Annularops Henderson & Bartsch, 1920 (verified source for family)
Anthracomya Salter, 1861 † accepted as Anthraconaia Trueman & Weir, 1946 † (source of synonymy)
Anthracomya Salter, 1861 † accepted as Anthraconaia Trueman & Weir, 1946 † (verified source for family)
Anthraconaia Trueman & Weir, 1946 † (verified source for family)
Anthraconaia Trueman & Weir, 1946 † (current name source)
Anthraconauta Pruvost, 1930 † (current name source)
Anthraconauta Pruvost, 1930 † (extant flag source)
Anthraconauta Pruvost, 1930 † (verified source for family)
Araucania Parodiz, 1954 accepted as Austrodiscus Parodiz, 1957 (source of synonymy)
Araucania Parodiz, 1954 accepted as Austrodiscus Parodiz, 1957 (verified source for family)
Articulipoma Bartsch, 1946 (verified source for family)
Articulipoma Bartsch, 1946 (current name source)
Articulipoma Bartsch, 1946 (extant flag source)
Atomodesma Beyrich, 1865 † (verified source for family)
Atomodesmatidae Waterhouse, 1976 † (name verified source)
Atomodesmatidae Waterhouse, 1976 † (basis of record)
Atomodesmatidae Waterhouse, 1976 † (extant flag source)
Atomodesmatidae Waterhouse, 1976 † (taxonomy source)
Atomodesmatidae Waterhouse, 1976 † (habitat flag source)
Atomodesmatidae Waterhouse, 1976 † (current name source)
Atomodesmidae Waterhouse, 1976 † accepted as Atomodesmatidae Waterhouse, 1976 † (source of synonymy)
Augea Khalfin, 1950 † (verified source for family)
Austrodiscus Parodiz, 1957 (current name source)
Austrodiscus Parodiz, 1957 (habitat flag source)
Austrodiscus Parodiz, 1957 (basis of record)
Austrodiscus Parodiz, 1957 (verified source for family)
Austrodiscus Parodiz, 1957 (name verified source)
Austrodiscus Parodiz, 1957 (extant flag source)
Axonella Pacaud, Lhomme & Renaud, 2021 † (verified source for family)
Aylacostoma Spix, 1827 (current name source)
Aylacostoma Spix, 1827 (verified source for family)
Basistoma Lea, 1852 accepted as Hemisinus Swainson, 1840 (source of synonymy)
Basistoma Lea, 1852 accepted as Hemisinus Swainson, 1840 (extant flag source)
Bellacepolis Baker, 1943 (current name source)
Bellacepolis Baker, 1943 (verified source for family)
Bellacepolis Baker, 1943 (extant flag source)
Bellacepolis Baker, 1943 (habitat flag source)
Bermudezsiphona de la Torre & Bartsch, 1941 accepted as Opisthosiphon Dall, 1905 (name verified source)
Bermudezsiphona de la Torre & Bartsch, 1941 accepted as Opisthosiphon Dall, 1905 (source of synonymy)
Bermudezsiphona de la Torre & Bartsch, 1941 accepted as Opisthosiphon Dall, 1905 (extant flag source)
Blaesospira Crosse, 1890 (verified source for family)
Blaesospira Crosse, 1890 (current name source)
Bonairea Baker, 1924 (verified source for family)
Bonairea Baker, 1924 (habitat flag source)
Bonairea Baker, 1924 (extant flag source)
Bonairea Baker, 1924 (current name source)

 Taxonomic remark

 for Augea Khalfin, 1950 †

Possibly requires further investigation: listed in Prokopievskiidae, a freshwater family, by MolluscaBase (2023 ... [details]

 Taxonomic remark

 for Austrodiscus Parodiz, 1957

Nomen novum for Araucania Parodiz, 1954, non Araucania Pate, 1947 (Hymenoptera). [details]

 Taxonomic remark

 for Coluzea Allan, 1927

Neave cites authorship for this name as Allan, 1927 (alternative cited year for same work); same taxon is given in ... [details]

 Taxonomic remark

 for Falsifusus Grabau, 1904 †

Placed in Columbariidae at this time in IRMNG following MolluscaBase (2023 version), although Vermeij & Snyder, ... [details]

 Taxonomic remark

 for Junjagiana Yatsuk, 1979 †

Requires further research: marine according to Sepkoski, 2002, however in a freshwater family (Prokopievskiidae) in ... [details]

 Taxonomic remark

 for Kinerkaellidae Scarlato & Starobogatov, 1979 †

Recognised at subfamily level only (as Kinerkaellinae Scarlato & Starobogatov, 1979) in MolluscaBase (2023 version). [details]

 Taxonomic remark

 for Mrassiella Ragozin, 1935 †

Further research needed: listed in Sepkoski, 2002 as a marine genus, however assigned to the freshwater family ... [details]

 Taxonomic remark

 for Procopievskia Raghozin, 1924 †

Requires further research: listed as marine in Sepkoski, 2002, however in Prokopievskiidae (freshwater family) in ... [details]

 Taxonomic remark

 for Soanella Betekhtina in Betekhtina & Tokareva, 1988 †

Junior homonym of Soanella Kanygin, 1967 (Crustacea); replacement name is Soanellina Betekhtina, 1990. [details]

 Taxonomic remark

 for Syniella Kanev, 1980 †

Junior homonym of Syniella Reitlinger, 1948 (?Foraminifera); replacement name is Synjaella Kanev, 1993. [details]

 Taxonomic remark

 for Vibex Gray, 1847

Unused senior synonym of Pachymelania Smith, 1893. MolluscaBase (2023 version) states: Not available (nomen nudum) ... [details]