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 Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914
       Family Tolypotrichaceae Hauer, Bohunická, J.R.Johans., Mareš & Berrendero-Gomez (2014) see Family Tolypotrichaceae corrig. Hauer et al. 2014
         01 ?Genus Borzinema G.De Toni (1936) see Genus Borzinema De Toni 1936
         02 ?Genus Coleodesmiopsis Dutt, Datta & Gupta (1983) see Genus Coleodesmiopsis corrig. Dutt et al. 1983
         03 ?Genus Coleodesmium A. Borzì ex L. Geitler (1942) see Genus Coleodesmium Borzì ex Geitler 1942
         04 Genus Dactylothamnos Komárek, Genuário, Fiore & Elster (2015) see Genus Dactylothamnos Komárek et al. 2015
         05 Genus Dapisostemon Hentschke, Sant'Anna & Johansen (2016) see Genus Dapisostemon Hentschke et al. 2016
         06 Genus Hassallia M.J. Berkeley ex Bornet & Flahault (1886), nom. illeg. see Genus Tolypothrix Kützing ex Bornet and Flahault 1886
         07 Genus Kryptousia Alvarenga, Andreote, Branco & Fiore (2017) see Genus Kryptousia Alvarenga et al. 2017
         08 Genus Rexia Casamatta, Gomez & J.R.Johans. (2006) see Genus Rexia Casamatta et al. 2006
         09 ?Genus Seguenzaea Borzì (1907) see Genus Seguenzaea Borzì 1907
         10 Genus Spirirestis Flechtner & J.R.Johans. (2002) see Genus Spirirestis Flechtner and Johansen 2002
         11 ?Genus Streptostemon C.L. Sant'Anna, T.M.P. Azevedo, J. Kaštovský & Komárek (2010) see Genus Streptostemon Sant'Anna et al. 2010
         12 Genus Tolypothrix Kütz. ex Bornet & Flahault (1886) see Genus Tolypothrix Kützing ex Bornet and Flahault 1886
         13 Genus Godleya Novis & Visnovsky (2011) see Genus Godleya Novis and Visnovsky 2011
         14 Genus Toxopsis V.Lamprinou, K.Skaraki, G.Kotoulas, A.Economou-Amili & A.Pantazidou (2012), nom. inval. see Genus Toxopsis Lamprinou et al. 2012 nom. inval.