azoarcus buckelii azoarcus buckelii azoarcus buckelii is a bacterium from the genus of azoarcus. azoarcus buckelii scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: rhodocyclales family: rhodocyclaceae genus: azoarcus species: a. buckelii binomial name azoarcus buckeliimechichi et al. 2002 type strain dsm 14744, fuchs u120, lmg 26916