prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval. Domain "Bacteria" Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024 Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021 Class Alphaproteobacteria Garrity et al. 2006 Order Kiloniellales Wiese et al. 2009 [monotypic] see Order Rhodospirillales Pfennig and Trüper 1971 (Approved Lists 1980) 1 Family Kiloniellaceae Wiese et al. 2009 [monotypic]