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 stat. inval.
     Kingdom Bacteria Cavalier-Smith 1998 nom. inval. - bacteria see Kingdom Bacteria Cavalier-Smith 2002 stat. inval.
       Subkingdom Eubacteria Cavalier-Smith 1981 see Domain Bacteria Woese et al. 1990 stat. inval.
         Division Gracilicutes Gibbons and Murray 1978 (Approved Lists 1980) see Phylum Gracilicutes
           Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 stat. inval. - cyanobacteria see Phylum Cyanobacteriota Oren et al. 2022
             Class Hormogoneae Thuret (1875) - filamentous cyanobacteria see Class Hormogoneae Cavalier-Smith 2002 nom. illeg., nom. rej.
               Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914
                 Genus Prochlorothrix Burger-Wiersma et al. 1989
                   Prochlorothrix hollandica Burger-Wiersma, Stal & Mur (1989)