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 [Class "Alphaproteobacteria" Garrity and Holt 2001 nom. nud.] see Class Alphaproteobacteria Garrity et al. 2006 3 [Order "Rhodobacterales"] see Order Rhodobacterales Garrity et al. 2006 4 [Order "Sphingomonadales"] see Order Sphingomonadales Yabuuchi and Kosako 2006 6 [Order "Rhizobiales"] see Order Rhizobiales Kuykendall 2006