life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Superkingdom Prokarya see Domain Bacteria Woese et al. 1990 Kingdom Bacteria (Cohn 1870) Cavalier-Smith 1983 - bacteria see Kingdom Bacteria Cavalier-Smith 2002 Subkingdom Eubacteria Cavalier-Smith 1981 see Domain Bacteria Woese et al. 1990 Division Gracilicutes Gibbons and Murray 1978 (Approved Lists 1980) see Phylum Gracilicutes Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria Class Coccogoneae Thuret (1875) - coccoid cyanobacteria see Subclass Oscillatoriophycideae Order Chroococcales Wettst. (1924) Genus Prochloron R.A. Lewin 1977 [ICBN]