Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum Terrabacteria Battistuzzi et al. 2004
               Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
                 Class "Cyanobacteria" Cavalier-Smith, 2002
                   [Family Subsection 5.1 nom. inval.]
                     [Genus "Fischerella" [ICNB]] see Genus Fischerella (E. Bornet & C. Flahault) M. Gomont (1895)
                       ["Fischerella thermalis" ( (schwabe) Born. & Flah.) Gomont]