oxalobacter oxalobacter oxalobacter is a genus of bacteria in the oxalobacteraceae family. the species are chemoorganotrophs and strictly anaerobic. they are found in rumens of animals such as cattle and in feces of other animals and humans. some are marine and some have been isolated from fresh water. these bacteria are characterized by their ability to metabolize oxalate. oxalobacter scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: oxalobacteraceae genus: oxalobacterallison et al. 1985 type species oxalobacter formigenes species oxalobacter aliiformigenes oxalobacter formigenes oxalobacter paeniformigenes oxalobacter paraformigenes oxalobacter vibrioformis the genus was first identified in 1985.