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?] Phylum "Epsilonproteobacteria" Garrity et al., 2006 Class Epsilonproteobacteriaᵀ Garrity et al. 2006 Order Campylobacterales Garrity et al. 2006 Family "Hydrogenimonaceae" Garrity et al. 2004 nom. nud. [monotypic] Genus Hydrogenimonasᵀ Takai et al. 2004 [monotypic] Hydrogenimonas thermophilaᵀ Takai et al. 2004