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