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 "Deltaproteobacteria" Kuever et al., 2006 [polyphyletic] Class Deltaproteobacteriaᵀ Kuever et al. 2006 Order Myxococcales Tchan et al. 1948 (Approved Lists 1980) Suborder Cystobacterineae Reichenbach 2007 Family Cystobacteraceaeᵀ McCurdy 1970 (Approved Lists 1980) Genus Cystobacterᵀ Schroeter 1886 (Approved Lists 1980) Cystobacter violaceus (ex Kühlwein and Gallwitz 1958) Reichenbach 2007