[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Cyanobacteria" (ex Stanier 1974) Cavalier-Smith 2002 stat. inval. - cyanobacteria see Phylum Cyanobacteriota Oren et al. 2022
       Class "Cyanobacteria" "Stanier 1974" nom. inval. see Class Chroococcophyceae Hollerbach et al. 1953
         Family Family 4.2 nom. inval.
           Genus "Calothrix" Agardh ex Bornet and Flahault 1886 nom. inval. see Genus Calothrix C.Agardh ex Bornet & Flahault (1886)
             "Calothrix" Agardh, 1886 Ex Bornet & Flahault