Procaryotic Genera Domain "Bacteria" Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024 Phylum Proteobacteria Garrity and Holt 2001 nom. nud. see Phylum Proteobacteria Garrity et al. 2005 stat. inval. Class "Epsilonproteobacteria" "Garrity and Holt 2001" nom. nud. [monotypic] see Class Epsilonproteobacteria Garrity et al. 2006 Order "Campylobacterales" "Garrity and Holt 2001" nom. nud. see Order Campylobacterales Garrity et al. 2006 Family Campylobacteraceae Vandamme and De Ley 1991 Genus Arcobacter Vandamme et al. 1991