Domain Bacteria Woese et al. 1990
   Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
     Class "Cyanobacteria" Cavalier-Smith, 2002
       Subsection III see Family Family 3.1 nom. inval.
         Form genus Geitlerinema (Anagnostidis & Komárek) K. Anagnostidis 1989 [ICBN]