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 Campylobacteraceaeᵀ Vandamme and De Ley 1991 Genus Sulfurospirillum Schumacher et al. 1993 Sulfurospirillum halorespirans Luijten et al. 2003