[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Epsilonproteobacteria Garrity et al. 2006
         Order Campylobacterales Garrity et al. 2006
           Family Campylobacteraceae Vandamme and De Ley 1991
             Genus Arcobacter Vandamme et al. 1991
               1 Arcobacter nitrofigilis (McClung et al. 1983) Vandamme et al. 1991
               2 Arcobacter butzleri (Kiehlbauch et al. 1991) Vandamme et al. 1992
               3 Arcobacter cibarius Houf et al. 2005
               4 Arcobacter cryaerophilus (Neill et al. 1985) Vandamme et al. 1991
               5 Arcobacter halophilus Donachie et al. 2005
               6 Arcobacter skirrowii Vandamme et al. 1992