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 [Class "Fibrobacteria"ᵀ Spain et al., 2012 [monotypic]] see Class Fibrobacteria Spain et al. 2012 [Order "Fibrobacterales"ᵀ Garrity and Holt 2001 nom. nud. [monotypic]] see Order Fibrobacterales Spain et al. 2012 [Family "Fibrobacteraceae"ᵀ Garrity and Holt 2001 nom. nud. [monotypic]] see Family Fibrobacteraceae Spain et al. 2012