acidiferrobacter acidiferrobacter acidiferrobacter is an acidophilic, thermotolerant, and facultatively anaerobic genus of bacteria with one known species (acidiferrobacter thiooxydans). this genera has been included in new order called acidiferrobacterales in 2015. a. thiooxydans has been isolated from refuse from a coal mine from calloway county, kentucky, in the united states. acidiferrobacter scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: acidiferrobacterales family: acidiferrobacteraceae genus: acidiferrobacterhallberg et al. 2011 type species acidiferrobacter thiooxydans species a. thiooxydans