Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         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 "Zetaproteobacteria" Emerson et al., 2007 [monotypic]
                 Class "Zetaproteobacteria"ᵀ Emerson et al. 2007 [monotypic]
                   Order "Mariprofundales" Emerson et al. 2007 [monotypic]
                     Family "Mariprofundaceae"ᵀ Emerson et al. 2007 [monotypic]
                       Genus Mariprofundusᵀ Emerson et al. 2010 [monotypic]
                         1 Mariprofundus ferrooxydansᵀ Emerson et al. 2010