natranaerobiaceae natranaerobiaceae the natranaerobiaceae are a family of bacteria placed within the class clostridia. this family contains the thermophilic bacterial species natranaerobius thermophilus and the related species natranaerobaculum magadiense. natranaerobiaceae scientific classification domain: bacteria phylum: bacillota class: "natranaerobiia" order: natranaerobiales family: natranaerobiaceaemesbah et al. 2007 genera natranaerobaculum natranaerobius "natronoanaerobium" natronovirga phylogeny 16s rrna based ltp_01_2022 natranaerobius mesbah et al. 2007 natranaerobaculum zavarzina et al. 2013 natronovirga mesbah & wiegel 2009