Domain Bacteria Woese et al. 1990
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   Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
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     Class "Cyanobacteria" Cavalier-Smith, 2002
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       Subsection IV
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         1 Subgroup I see Family I
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         2 Subgroup II see Family II
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