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
                   Subclass Synechococcophycideae
                     Order Synechococcalesᵀ
                       Family Merismopediaceae Elenkin (1933)
                         Genus Merismopediaᵀ F.J.P. Meyen (1839)
                           Merismopedia angularis R.H. Thompson 1938
                           Merismopedia arctica (E.K. Kossinskaja) J. Komárek and K. Anagnostidis 1995
                           Merismopedia convoluta A. de Brébisson in F.T. Kützing 1849
                           Merismopedia elegans A. Braun ex Kützing 1849
                           Merismopedia ferrophila Hindák 1982
                           Merismopedia glauca (C.G. Ehrenberg) F.T. Kützing 1845
                           Merismopedia haumanii Kufferath 1942
                           Merismopedia insignis Shkorbatov 1923
                           Merismopedia marssonii Lemmermann 1900
                           Merismopedia minima G. Beck von Mannagetta und Lërchenau in G. Beck von Mannagetta und Lërchenau and A. Zahlbruckner 1897
                           Merismopedia punctata F.J.F. Meyen 1839
                           Merismopedia smithii De Toni 1939
                           Merismopedia tenuissima Lemmermann 1898
                           Merismopedia thermalis Kützing 1843
                           Merismopedia trolleri Bachmann 1920
                           Merismopedia warmingiana (G. Lagerheim) A. Forti 1907