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 Gammaproteobacteria Garrity et al. 2005 Order Methylococcales Bowman 2005 Family Crenotrichaceae Hansgirg 1888 (Approved Lists 1980) [monotypic] Genus Crenothrix Cohn 1870 (Approved Lists 1980)