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 "Proteobacteria" Craig et al. 2010
               Phylum "Alphaproteobacteria" Garrity et al., 2006 [monotypic]
                 Class Alphaproteobacteriaᵀ Garrity et al. 2006
                   Order Sphingomonadales Yabuuchi and Kosako 2006
                     Family Sphingomonadaceaeᵀ Kosako et al. 2000
                       Genus Sphingomonasᵀ Yabuuchi et al. 1990
                         Sphingomonas echinoides (Heumann 1962) Denner et al. 1999