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 Sphingopyxis Takeuchi et al. 2001
                         01 Sphingopyxis alaskensis (Vancanneyt et al. 2001) Godoy et al. 2003
                         02 Sphingopyxis baekryungensis Yoon et al. 2005
                         03 Sphingopyxis chilensis Godoy et al. 2003
                         04 Sphingopyxis flavimaris Yoon and Oh 2005
                         05 Sphingopyxis ginsengisoli Lee et al. 2008
                         06 Sphingopyxis litoris Kim et al. 2008
                         07 Sphingopyxis macrogoltabida (Takeuchi et al. 1993) Takeuchi et al. 2001
                         08 Sphingopyxis marina Kim et al. 2008
                         09 Sphingopyxis taejonensis (Lee et al. 2001) Pal et al. 2006
                         10 Sphingopyxis terrae (Takeuchi et al. 1993) Takeuchi et al. 2001
                         11 Sphingopyxis witflariensis Kämpfer et al. 2002