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 Porphyromonadaceae Krieg 2012
                       Genus Parabacteroides Sakamoto and Benno 2006
                         1 Parabacteroides distasonis (Eggerth and Gagnon 1933) Sakamoto and Benno 2006
                         2 Parabacteroides goldsteinii (Song et al. 2006) Sakamoto and Benno 2006
                         3 Parabacteroides merdae (Johnson et al. 1986) Sakamoto and Benno 2006
                         4 Parabacteroides johnsonii Sakamoto et al. 2007
                         5 Parabacteroides gordonii Sakamoto et al. 2009
                         6 Parabacteroides chartae Tan et al. 2012