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 "Alphaproteobacteria" Garrity et al., 2006 [monotypic] Class Alphaproteobacteriaᵀ Garrity et al. 2006 Order Sphingomonadales Yabuuchi and Kosako 2006 Family Sphingomonadaceaeᵀ Kosako et al. 2000 Genus Blastomonas Sly and Cahill 1997 1 Blastomonas natatoriaᵀ (Sly 1985) Sly and Cahill 1997 2 Blastomonas ursincola (Yurkov et al. 1997) Hiraishi et al. 2000