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 01 Genus Allosphingosinicella Hördt et al. 2020 02 Genus Alterisphingorhabdus Yan et al. 2024 03 Genus Aquisediminimonas Jin et al. 2019 04 Genus Binariimonas Zhao et al. 2025 05 Genus Blastomonas Sly and Cahill 1997 06 Genus Chakrabartia Jani et al. 2019 07 Genus Facivitalis Arkan-Ozdemir et al. 2025 08 Genus Hephaestia Felföldi et al. 2014 [monotypic] 09 Genus Novosphingopyxis Feng et al. 2020 10 Genus Parablastomonas Ren et al. 2015 [monotypic] 11 Genus Parasphingopyxis Uchida et al. 2012 [monotypic] 12 Genus Parasphingorhabdus Feng et al. 2020 13 Genus Rhizorhabdus Francis et al. 2014 14 Genus Rhizorhapis Francis et al. 2014 15 Genus Sphingobium Takeuchi et al. 2001 16 Genus Sphingomicrobium Kämpfer et al. 2012 17 Genus Sphingomonasᵀ Yabuuchi et al. 1990 18 Genus Sphingopyxis Takeuchi et al. 2001 19 Genus Sphingorhabdus Jogler et al. 2013 20 Genus Stakelama Chen et al. 2010 21 Genus "Citromicrobium" Yurkov et al. 1999 nom. inval. 22 Genus "Hankyongella" Siddiqi and Im 2020 nom. inval. 23 Genus "Tardibacter" Lee et al. 2018 nom. inval. 24 Genus "Candidatus Andeanibacterium" Diaz-Garcia et al. 2023 nom. pro-inval.