prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 Domain "Bacteria" Woese et al. 1990 Phylum "Elusimicrobia" Geissinger et al. 2010 [monotypic] Class Elusimicrobia Geissinger et al. 2010 [monotypic] 1 Order Elusimicrobiales Geissinger et al. 2010 [monotypic]