Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum Fibrobacteres-Chlorobi-Bacteroidetes (FCB) Gupta 2004
               Phylum Bacteroidetes Krieg et al. 2012
                 Class Bacteroidiaᵀ Krieg 2012 [monotypic]
                   Order Bacteroidalesᵀ Krieg 2012
                     Family Prevotellaceae Krieg 2012
                       1.1 Genus Prevotellaᵀ Shah and Collins 1990
                       1.2 Genus Alloprevotella Downes et al. 2013
                       2 Genus Hallella Moore and Moore 1994 [monotypic]
                       3 Genus Paraprevotella Morotomi et al. 2009
                       4 Genus Xylanibacter Ueki et al. 2006 [monotypic]