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 Leptolyngbyales Strunecký & Mareš (2023) [paraphyletic] see Order Leptolyngbyales Strunecký and Mareš 2023
       Family Trichocoleusaceae T.Mai & J.R.Johans. (2018), sedis mutabilis see Family Trichocoleusaceae Mai and Johansen 2018
         1 ?Genus Geitleribactron Komárek (1975) see Genus Geitleribactron Komárek 1975
         2 ?Genus Pinocchia Dvořák, Jahodářová & Hašler (2015) see Genus Pinocchia Dvořák et al. 2015
         3 ?Genus Schizothrix Kütz. ex Gomont (1892) see Genus Schizothrix Kützing ex Gomont 1892
         4 ?Genus Sirocoleum Kütz. ex Gomont (1892) see Genus Sirocoleum Kützing ex Gomont 1892
         5 Genus Trichocoleus Anagn. (2001) see Genus Trichocoleus Anagnostidis 2001