thermodesulforhabdus norvegica thermodesulforhabdus norvegica thermodesulforhabdus norvegica is a species of thermophilic sulfate-reducing bacteria, the type and only species of its genus. it is gram-negative, acetate-oxidizing, with type strain a8444. thermodesulforhabdus norvegica scientific classification domain: bacteria phylum: thermodesulfobacteriota class: syntrophobacteria order: syntrophobacterales family: thermodesulforhabdaceae genus: thermodesulforhabdus species: thermodesulforhabdus norvegicacorrig. beeder et al. 1995