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 "Betaproteobacteria" Garrity et al., 2006 [monotypic] Class Betaproteobacteriaᵀ Garrity et al. 2006 Order Nitrosomonadales Garrity et al. 2006 Family Nitrosomonadaceaeᵀ Garrity et al. 2006 Genus Nitrosomonasᵀ Winogradsky 1892 (Approved Lists 1980) Nitrosomonas marina Koops et al. 2001