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. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Actinomycetota Goodfellow 2021
                 Class Thermoleophilia Suzuki and Whitman 2013
                   Order Solirubrobacterales Reddy and Garcia-Pichel 2009
                     1 Genus "Candidatus Mayfieldus" Sipes et al. 2024 nom. pro-inval., incertae sedis
                     2 Family Baekduiaceae An et al. 2019
                     3 Family Capillimicrobiaceae Vieira et al. 2022 [monotypic]
                     4 Family Conexibacteraceae Stackebrandt 2005 [monotypic]
                     5 Family Paraconexibacteraceae Chun et al. 2020 [monotypic]
                     6 Family Parviterribacteraceae Foesel et al. 2016 [monotypic]
                     7 Family Patulibacteraceae Takahashi et al. 2006 [monotypic]
                     8 Family Solirubrobacteraceaeᵀ Stackebrandt 2005 [monotypic]