Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain Bacteria Woese et al. 2024 Kingdom Pseudomonadati (Gibbons and Murray 1978) Oren and Göker 2024 Phylum Pseudomonadotaᵀ Garrity et al. 2021 Class Alphaproteobacteria Garrity et al. 2006 Order Sphingomonadales Yabuuchi and Kosako 2006 Family Sphingomonadaceaeᵀ Kosako et al. 2000 Genus Sphingomonasᵀ Yabuuchi et al. 1990