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 Terrabacteria Battistuzzi et al. 2004
               Phylum Chloroflexi Garrity and Holt 2001
                 Class Chloroflexiaᵀ Gupta et al. 2013
                   Order Chloroflexales Gupta et al. 2013
                     Suborder Roseiflexineae Gupta et al. 2013 [monotypic]
                       Family Roseiflexaceaeᵀ Gupta et al. 2013
                         Genus Heliothrix Pierson et al. 1986 [monotypic]
                           1 Heliothrix oregonensisᵀ Pierson et al. 1986