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 Rikenellaceae Krieg et al. 2012
                       Genus Alistipes Rautio et al. 2003
                         1 Alistipes finegoldii Rautio et al. 2003
                         2 Alistipes indistinctus Nagai et al. 2010
                         3 Alistipes onderdonkii Song et al. 2006
                         4 Alistipes putredinis (Weinberg et al. 1937) Rautio et al. 2003
                         5 Alistipes shahii Song et al. 2006
                         6 Alistipes timonensis Lagier et al. 2014