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 "Acidithiobacillia" [monotypic] Class Acidithiobacilliaᵀ Williams and Kelly 2013 [monotypic] Order Acidithiobacillalesᵀ Garrity et al. 2005 Family Acidithiobacillaceaeᵀ Garrity et al. 2005 [monotypic] Genus Acidithiobacillusᵀ Kelly and Wood 2000 Acidithiobacillus ferridurans Hedrich and Johnson 2013