living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryotae see Superkingdom Prokarya
     Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990
       Division Cyanophycota see Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002
         Class Cyanophyceae Schaffner (1909) see Class Cyanobacteria Cavalier-Smith, 2002
           Genus Crinalium Crow 1927 nom. inval. see Genus Crinalium W.B. Crow 1927 [ICBN]
           1 Order Chroococcales Wettst. (1924)
           2 Order Pleurocapsales Geitler (1925) see Order Pleurocapsales Cavalier-Smith 2002
           3 Order Stigonematales Geitler (1925) see Order Stigonematales (ex Geitler 1925) Cavalier-Smith 2002 nom. rej.
           4 Order Nostocales Borzì (1914)