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 Chroococcaceae Nägeli (1849) see Family Chroococcaceae Nägeli 1849
         ?Genus Johanseninema P. Hašler, P. Dvořák & A. Poulíčková (2014) see Genus Johanseninema Hašler et al. 2014