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 Cyanodermatium L. Geitler (1933) see Genus Cyanodermatium Geitler 1933