Extended Data Fig. 9: Phylogenomic placement of Candidatus Thermodesulfobacterium syntrophicum based on the concatenated alignment of 71 bacterial single copy core genes.

Ca. T. syntrophicum is closely related to the already cultured Thermodesulfobacterium geofontis (OPF15T) and to Ca. Thermodesulfobacterium torris, which functions as partner bacterium in the thermophilic anaerobic oxidation of methane. The outgroup consists of members of the candidate phylum Bipolauricaulota. The tree scale bar indicates 10% sequence divergence.