procaryotes
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum Fibrobacteres Garrity and Holt 2001 nom. inval. [monotypic] see Phylum Fibrobacteres Garrity and Holt 2012 stat. inval.
       Class "Fibrobacteres" "Garrity and Holt 2001" nom. nud. [monotypic] see Class Fibrobacteria Spain et al. 2012
         Order "Fibrobacterales" "Garrity and Holt 2001" nom. nud. [monotypic] see Order Fibrobacterales Spain et al. 2012
           Family "Fibrobacteraceae" "Garrity and Holt 2001" nom. nud. [monotypic] see Family Fibrobacteraceae Spain et al. 2012
             1 Genus Fibrobacter Montgomery et al. 1988