life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Empire Prokaryota (Dougherty 1957) Allsopp 1969 [monotypic] see Domain Bacteria Woese et al. 1990
     Kingdom Bacteria (Cohn 1870) Cavalier-Smith 1983 [paraphyletic] - bacteria see Kingdom Bacteria Cavalier-Smith 2002
       Subkingdom Negibacteria Cavalier-Smith 1987 [paraphyletic?] see Subkingdom Negibacteria Cavalier-Smith 2002
         Infrakingdom Glycobacteria Cavalier-Smith 1998 [paraphyletic?] see Infrakingdom Glycobacteria Cavalier-Smith 2002
           Superphylum Pimelobacteria (Cavalier-Smith 1992) Cavalier-Smith 1998 [paraphyletic?] see Domain Bacteria Woese et al. 1990
             Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
               Subphylum Phycobacteria Cavalier-Smith 1998 see Subphylum Phycobacteria Cavalier-Smith 2002
                 1 Genus Anabaena Bory 1822 ex Bornet & Flahault 1886 nom. cons. [ICBN]
                 2 Genus Nostoc Vaucher ex Bornet & Flahault (1888)
                 3 Genus Prochloron R.A. Lewin 1977 [ICBN]