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 stat. inval. [paraphyletic?]] see Domain Bacteria Woese et al. 2024
             [Phylum "Aquificae" Reysenbach 2001 nom. inval.] see Phylum Aquificae Reysenbach 2002 stat. inval.
               [Class "Aquificae"ᵀ Reysenbach 2001 nom. inval.] see Class Aquificae Reysenbach 2002
                 1 [Order "Aquificales"ᵀ Reysenbach 2001 nom. inval.] see Order Aquificales Reysenbach 2002