prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Actinobacteria" Garrity and Holt 2001
       Class Nitriliruptoria Ludwig et al. 2013
         Order Egibacterales Zhang et al. 2016 [monotypic]
           Family Egibacteraceae Zhang et al. 2016 [monotypic]
             Genus Egibacter Zhang et al. 2016