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 "Proteobacteria" Garrity and Holt 2001] see Phylum Proteobacteria Garrity et al. 2005 ["Delta Group"] see Class Deltaproteobacteria Garrity et al. 2001 nom. ined. ["Myxobacteria"] see Order Myxococcales Tchan et al. 1948 (Approved Lists 1980)