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?] Superphylum "Proteobacteria" Craig et al. 2010 Phylum "Alphaproteobacteria" Garrity et al., 2006 [monotypic] Class Alphaproteobacteriaᵀ Garrity et al. 2006 Order Rhizobiales Kuykendall 2006 Family Rhizobiaceaeᵀ Conn 1938 (Approved Lists 1980) [Genus Agrobacterium Conn 1942 (Approved Lists 1980)] see Genus Rhizobium Frank 1889 (Approved Lists 1980) [Agrobacterium ferrugineum (ex Ahrens and Rheinheimer 1967) Rüger and Höfle 1992] see Pseudorhodobacter ferrugineus (Rüger and Höfle 1992) Uchino et al. 2003