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 Ectothiorhodospiraceae Imhoff 1984 Genus Acidihalobacter Pablo et al. 2015 Genus Thioalbus Park et al. 2011 Genus Thiogranum Mori et al. 2015 01 Genus Ectothiorhodospiraᵀ Pelsh 1936 (Approved Lists 1980) 02 Genus Alkalilimnicola corrig. Yakimov et al. 2001 03 Genus Alkalispirillum Rijkenberg et al. 2002 [monotypic] 04 Genus Aquisalimonas Márquez et al. 2007 05 Genus Arhodomonas Adkins et al. 1993 06 Genus Ectothiorhodosinus Gorlenko et al. 2007 [monotypic] 07 Genus Halorhodospira Imhoff and Süling 1997 08 Genus Natronocella Sorokin et al. 2007 [monotypic] 09 Genus Nitrococcus Watson and Waterbury 1971 (Approved Lists 1980) [monotypic] 10 Genus Oceanococcus Li et al. 2014 [monotypic] 11 Genus Thioalkalivibrio Sorokin et al. 2001 12 Genus Thiohalospira Sorokin et al. 2008 13 Genus Thiorhodospira Bryantseva et al. 1999 [monotypic]