Aaptos Gray, 1867 (extant flag source)
Aaptos Gray, 1867 (basis of record)
Acanthella Schmidt, 1862 (extant flag source)
Acanthella Schmidt, 1862 (basis of record)
Acantheurypon Topsent, 1927 (extant flag source)
Acantheurypon Topsent, 1927 (basis of record)
Adreus Gray, 1867 (basis of record)
Adreus Gray, 1867 (extant flag source)
Agelas Duchassaing & Michelotti, 1864 (basis of record)
Aka de Laubenfels, 1936 accepted as Siphonodictyon Bergquist, 1965 (basis of record)
Alectona Carter, 1879 (basis of record)
Amorphinopsis Carter, 1887 (basis of record)
Amorphinopsis Carter, 1887 (extant flag source)
Amphiute Hanitsch, 1894 (basis of record)
Amphiute Hanitsch, 1894 (extant flag source)
Amphoriscus Haeckel, 1870 (extant flag source)
Amphoriscus Haeckel, 1870 (basis of record)
Ancorina Schmidt, 1862 (basis of record)
Ancorina Schmidt, 1862 (extant flag source)
Anisocrella Topsent, 1927 (basis of record)
Anisocrella Topsent, 1927 (extant flag source)
Anisotylacanthea Vacelet, 1969 accepted as Damiria Keller, 1891 (extant flag source)
Anisotylacanthea Vacelet, 1969 accepted as Damiria Keller, 1891 (basis of record)
Antho Gray, 1867 (basis of record)
Antho Gray, 1867 (extant flag source)
Aphrocallistes Gray, 1858 (basis of record)
Aphroceras Gray, 1858 (extant flag source)
Aphroceras Gray, 1858 (basis of record)
Aplysilla Schulze, 1878 (basis of record)
Aplysilla Schulze, 1878 (extant flag source)
Aplysina Nardo, 1834 (extant flag source)
Aplysina Nardo, 1834 (basis of record)
Aplysinopsis Lendenfeld, 1888 (extant flag source)
Aplysinopsis Lendenfeld, 1888 (basis of record)
Artemisina Vosmaer, 1885 (extant flag source)
Artemisina Vosmaer, 1885 (basis of record)
Asbestopluma Lankester, 1882 (basis of record)
Asbestopluma Lankester, 1882 (extant flag source)
Ascaltis Haeckel, 1872 (basis of record)
Ascaltis Haeckel, 1872 (extant flag source)
Ascandra Haeckel, 1872 (basis of record)
Ascandra Haeckel, 1872 (extant flag source)
Asconema Kent, 1870 (basis of record)
Asconema Schmidt, 1880 accepted as Asconema Kent, 1870 (extant flag source)
Asconema Kent, 1870 (extant flag source)
Ascyssa Haeckel, 1872 (basis of record)
Ascyssa Haeckel, 1872 (extant flag source)
Astylinifer Topsent, 1927 accepted as Acheliderma Topsent, 1892 (basis of record)
Astylinifer Topsent, 1927 accepted as Acheliderma Topsent, 1892 (extant flag source)
Atergia Stephens, 1915 (basis of record)
Atergia Stephens, 1915 (extant flag source)
Auletta Schmidt, 1870 (extant flag source)
Auletta Schmidt, 1870 (basis of record)
Auloplax Schulze, 1904 (basis of record)
Auloplax Schulze, 1904 (extant flag source)
Axinella Schmidt, 1862 (extant flag source)
Axinella Schmidt, 1862 (basis of record)
Axingella Topsent, 1928 accepted as Raspailia Nardo, 1833 (basis of record)
Axingella Topsent, 1928 accepted as Raspailia Nardo, 1833 (extant flag source)
Axinyssa Lendenfeld, 1897 (basis of record)
Axinyssa Lendenfeld, 1897 (extant flag source)
Biemna Gray, 1867 (extant flag source)
Biemna Gray, 1867 (basis of record)
Bubaris Gray, 1867 (basis of record)
Bubaris Gray, 1867 (extant flag source)
Bubaropsis Lévi & Vacelet, 1958 accepted as Cerbaris Topsent, 1898 (extant flag source)
Bubaropsis Lévi & Vacelet, 1958 accepted as Cerbaris Topsent, 1898 (basis of record)
Cacospongia Schmidt, 1862 (extant flag source)
Cacospongia Schmidt, 1862 (basis of record)
Callyspongia Duchassaing & Michelotti, 1864 (extant flag source)
Callyspongia Duchassaing & Michelotti, 1864 (basis of record)
Calyx Vosmaer, 1885 (extant flag source)
Calyx Vosmaer, 1885 (basis of record)
Caminella Lendenfeld, 1894 (basis of record)
Caminella Lendenfeld, 1894 (extant flag source)
Caminus Schmidt, 1862 (extant flag source)
Caminus Schmidt, 1862 (basis of record)
Cantabrina Ferrer-Hernandez, 1914 (basis of record)
Cantabrina Ferrer-Hernandez, 1914 (extant flag source)
Caulophacus Schulze, 1886 (basis of record)
Cerbaris Topsent, 1898 (basis of record)
Cerbaris Topsent, 1898 (extant flag source)
Chaetodoryx Topsent, 1927 (basis of record)
Chaetodoryx Topsent, 1927 (extant flag source)
Chalinopsilla Lendenfeld, 1888 accepted as Dactylia Carter, 1885 (basis of record)
Chalinopsilla Lendenfeld, 1888 accepted as Dactylia Carter, 1885 (extant flag source)
Chalinula Schmidt, 1868 (extant flag source)
Chalinula Schmidt, 1868 (basis of record)
Characella Sollas, 1886 (extant flag source)
Characella Sollas, 1886 (basis of record)
Chelonaplysilla de Laubenfels, 1948 (extant flag source)
Chelonaplysilla de Laubenfels, 1948 (basis of record)
Chondrilla Schmidt, 1862 (extant flag source)
Chondrilla Schmidt, 1862 (basis of record)
Chondrocladia Thomson, 1873 (basis of record)
Chondrosia Nardo, 1847 (extant flag source)
Chondrosia Nardo, 1847 (basis of record)
Chonelasma Schulze, 1886 (basis of record)
Chonelasma Schulze, 1886 (extant flag source)
Chrotella Sollas, 1886 accepted as Tetilla Schmidt, 1868 (basis of record)