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 "Proteobacteria" Garrity and Holt 2001] see Phylum Proteobacteria Garrity et al. 2005 [Subphylum Rhodobacteria Cavalier-Smith 1998] see Phylum Proteobacteria Garrity and Holt 2001 [Infraphylum Alphabacteria (Cavalier-Smith 1992) Cavalier-Smith 1998] see Class Alphaproteobacteria Garrity et al. 2006