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 "Gammaproteobacteria" Garrity et al., 2005 [monotypic] Class Gammaproteobacteriaᵀ Garrity et al. 2005 Order Chromatiales Imhoff 2005 Family Chromatiaceae Bavendamm 1924 (Approved Lists 1980) Genus Lamprocystis Schroeter 1886 (Approved Lists 1980) Lamprocystis purpurea (Eichler and Pfennig 1989) Imhoff 2001