prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 Domain "Bacteria" Woese et al. 1990 Phylum "Fibrobacteres" Garrity and Holt 2012 1 Class Chitinivibrionia Sorokin et al. 2014 [monotypic] 2 Class Fibrobacteria Spain et al. 2012 [monotypic]