Procaryotic Genera Count: [*] 25p;39c;84o;215f;1008g [28 May 2016] Domain "Bacteria" Woese et al. 1990 Count: [*] 23p;31c;72o;194f;935g [28 May 2016] Phylum Proteobacteria Garrity and Holt 2001 see Phylum Proteobacteria Garrity et al. 2005 Count: [*] 5c;34o;72f;430g [27 May 2016] Class "Epsilonproteobacteria" nom. inval. [monotypic] see Class Epsilonproteobacteria Garrity et al. 2006 Count: [*] 1o;2f;6g [27 May 2016] 1 Order "Campylobacterales" nom. inval. see Order Campylobacterales Garrity et al. 2006 Count: [*] 2f;6g [27 May 2016]