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 Nannocystineae Reichenbach 2007 Family "Haliangiaceae" Garrity et al. 2003 nom. nud. [monotypic] Genus Haliangiumᵀ Fudou et al. 2002 Haliangium ochraceum Fudou et al. 2002