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?] [Phylum "Fibrobacteres" Garrity and Holt 2001 [monotypic]] see Phylum Fibrobacteres Garrity and Holt 2012 1 [Class "Fibrobacteria"ᵀ Spain et al., 2012 [monotypic]] see Class Fibrobacteria Spain et al. 2012 1.0 [Class "Fibrobacteres"ᵀ Garrity & Holt, 2012 [monotypic]] see Class Fibrobacteria Spain et al. 2012