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 Nevskiales Naushad et al. 2015 1.1 Family Algiphilaceae Gutierrez et al. 2012 [monotypic] 1.2 Family Nevskiaceaeᵀ Henrici and Johnson 1935 (Approved Lists 1980) 2 Family "Salinisphaeraceae" Naushad et al., 2015 [monotypic]