Phylum Cyanobacteria Garcia-Pichel et al. (2020) see Phylum Cyanobacteriota Oren et al. 2022
   Class Cyanophyceae Hauck (1885) see Class Chroococcophyceae Hollerbach et al. 1953
     Order Chroococcales Ardissone (1887) see Order Chroococcales corrig. Ardissone 1887
       Family Pleurocapsaceae Geitler (1925) see Family Hyellaceae Borzì (1914)
         01 ?Genus Cyanocystis A. Borzì (1882) see Genus Cyanocystis Borzì 1882
         02 ?Genus Cyanoderma Weber-van Bosse (1887) see Genus Cyanoderma Weber-van Bosse 1887
         03 ?Genus Cyanosaccus K.J. Lukas & S. Golubić (1981) see Genus Cyanosaccus Lukas and Golubić 1981
         04 ?Genus Dalmatella A. Ercegović (1929) see Genus Dalmatella Ercegović 1929
         05 ?Genus Dermocarpella Lemmerm. (1907) see Genus Dermocarpella Lemmermann 1907
         06 ?Genus Epilithia A. Ercegović (1932), nom. illeg. see Genus Epilithia Ercegović 1932 nom. illeg.
         07 Genus Foliisarcina D.O. Alvarenga, J. Rigonato, L.H.Z. Branco, I.S. Melo & M.F. Fiore (2016) see Genus Foliisarcina Alvarenga et al. 2016
         08 ?Genus Hormathonema A. Ercegović (1929) see Genus Hormathonema Ercegović 1929
         09 ?Genus Hydrococcus Kütz. (1833), nom. cons. prop. see Genus Hydrococcus Kützing 1833 nom. cons.
         10 Genus Hyella Bornet & Flahault (1888) see Genus Hyella Bornet and Flahault 1888
         11 ?Genus Chamaecalyx Komárek & Anagn. (1986) see Genus Chamaecalyx Komárek and Anagnostidis 1986
         12 Genus Chondrocystis Lemmerm. (1899) see Genus Chondrocystis Lemmermann 1899
         13 ?Genus Chroococcidium L. Geitler (1933) see Genus Chroococcidium Geitler 1933
         14 Genus Chroococcopsis L. Geitler (1925) see Genus Chroococcopsis Geitler 1925
         15 ?Genus Myxohyella L. Geitler (1925) see Genus Myxohyella Geitler 1925
         16 Genus Myxosarcina H. Printz (1921) see Genus Myxosarcina Printz 1921
         17 ?Genus Nisada M. Gold-Morgan, L. González-Resendiz, H. León-Tejera & G. Montejano (2015)
         18 Genus Odorella Shalygin, Huang, Allen, Burkholder & Zimba (2019) see Genus Odorella Shalygin et al. 2019
         19 ?Genus Onkonema L. Geitler (1933) see Genus Onkonema Geitler 1933
         20 Genus Pleurocapsa Thur. (1885) see Genus Pleurocapsa Thuret 1885
         21 ?Genus Podocapsa A. Ércegovic (1931), nom. illeg. see Genus Hydropodocapsa E.A. Molinari-Novoa & M.D. Guiry (2021)
         22 ?Genus Radaisia C. Sauvageau (1895) see Genus Radaisia Sauvageau 1895
         23 ?Genus Sinaiella L. Gruia (1965) see Genus Sinaiella Gruia 1965
         24 ?Genus Solentia A. Ercegović (1927) see Genus Solentia Ercegović 1927
         25 Genus Stanieria Komárek & Anagn. (1986) see Genus Stanieria Komárek and Anagnostidis 1986
         26 ?Genus Tryponema A. Ercegović (1929) see Genus Tryponema Ercegović 1929
         27 Genus Xenococcus G. Thuret (1880) see Genus Xenococcus Thuret 1880
         28 ?Genus Xenotholos Gold-Morgan, Montejano & Komárek (1994) see Genus Xenotholos Gold-Morgan et al. 1994