Eukaryotes (190)

 Prokaryotes (2497)

   Bacteria (2341)

     Gammaproteobacteria (502)

     Betaproteobacteria (146)

     Epsilonproteobacteria (90)

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     Alphaproteobacteria (238)

     Other proteobacteria (1)

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     Unclassified (3)

   Archaea (156)