prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Acidobacteria" Thrash and Coates 2012
       1 Class Acidobacteria Cavalier-Smith 2002
       2 Class Blastocatellia Pascual et al. 2016
       3 Class Holophagae Fukunaga et al. 2008
       4 Genus Paludibaculum Kulichevskaya et al. 2014, incertae sedis