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 Rhodospirillales Pfennig and Trüper 1971 (Approved Lists 1980) Family Acetobacteraceae (ex Henrici 1939) Gillis and De Ley 1980 Genus Roseococcus Yurkov et al. 1994 1 Roseococcus suduntuyensis Boldareva et al. 2009 2 Roseococcus thiosulfatophilusᵀ Yurkov et al. 1994